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Automatically add system critical priority classes at cluster boostrapping

**What this PR does / why we need it**:
We had two PriorityClasses that were hardcoded and special cased in our code base. These two priority classes never existed in API server. Priority admission controller had code to resolve these two names. This PR removes the hardcoded PriorityClasses and adds code to create these PriorityClasses automatically when API server starts.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #60178

ref/ #57471

**Special notes for your reviewer**:

**Release note**:

```release-note
Automatically add system critical priority classes at cluster boostrapping.
```

/sig scheduling

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Correct the CHANGELOG-1.9.md

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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Ensure cloudprovider.InstanceNotFound is reported when the VM is not found on Azure

**What this PR does / why we need it**:

Azure ExponentialBackoff will still try to get VM information even when the VM has already been removed on Azure:

https://github.com/kubernetes/kubernetes/blob/1365ce341924fb705d25704d4802f8aec5582b38/pkg/cloudprovider/providers/azure/azure_backoff.go#L52-L60

It should report `cloudprovider.InstanceNotFound` early and avoid calling Azure APIs on such case.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #61465

**Special notes for your reviewer**:

Should be cherry-picked to v1.9

**Release note**:

```release-note
Ensure cloudprovider.InstanceNotFound is reported when the VM is not found on Azure
```

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Add support of specifying service tags for Azure cloud provider

**What this PR does / why we need it**:

This PR adds support of specifying service tags for Azure cloud provider by annotation `service.beta.kubernetes.io/azure-allowed-service-tags`.

Refer https://docs.microsoft.com/en-us/azure/virtual-network/security-overview#service-tags for more information about this feature.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #57914

**Special notes for your reviewer**:

**Release note**:

```release-note
Azure cloud provider now supports specifying allowed service tags by annotation `service.beta.kubernetes.io/azure-allowed-service-tags`
```

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Add others's status in hpa describe

**What this PR does / why we need it**:
Add other status in HPA describe

- rs
- deployment

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
Add all kinds of resource objects' statuses in HPA description.
```

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wire through custom-column print flags

**Release note**:
```release-note
NONE
```
Begin implementing pieces needed to retrieve custom-column printers from a set of flags.
Proposal: https://docs.google.com/document/d/19ZZFVe9oD1KQmk5uExggRWtRl_hKGfYnBXvHZJlgEro/edit#heading=h.pnvbfi14v4zz

cc @soltysh @deads2k @pwittrock

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Grammar and spelling update

**What this PR does / why we need it**:
Some minor documentation grammar and spelling update

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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wire through name/success print flags

**Release note**:
```release-note
NONE
```

Begin implementing pieces needed to retrieve name/success printers from a set of flags.
Proposal: https://docs.google.com/document/d/19ZZFVe9oD1KQmk5uExggRWtRl_hKGfYnBXvHZJlgEro/edit#heading=h.pnvbfi14v4zz

cc @soltysh @deads2k @pwittrock

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add some uts in helpers for CRD

**What this PR does / why we need it**:
add some uts in helpers for CRD
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 61546, 61038, 61575, 60779, 61496). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

prune Bazel build files from imported go deps and update to gazelle 0.10.1

**What this PR does / why we need it**: updates the `hack/godep-save.sh` script to prune any imported `BUILD`, `BUILD.bazel`, or `WORKSPACE` files.

We assume anything imported through godep doesn't need Bazel, but a Bazel-enabled Go project may include `BUILD` files with missing dependencies not imported by godep. To prevent this from breaking the Bazel build, remove these. (Gazelle will then regenerate the `BUILD` files based on the go build metadata.)
 
Additionally, there seems to be a bug in gazelle where it follows the `vendor/k8s.io` staging symlinks only when run through `hack/run-in-gopath.sh`. Updating to gazelle 0.10.1 fixes this bug.

A similar PR was recently merged in kubernetes/test-infra: https://github.com/kubernetes/test-infra/pull/7366

**Release note**:

```release-note
NONE
```

/assign @thockin 
cc @jayconrod

Automatic merge from submit-queue (batch tested with PRs 61546, 61038, 61575, 60779, 61496). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Use random port to avoid conflict with other important pods that might be listening on 80.

**What this PR does / why we need it**:
Fix https://github.com/kubernetes/kubernetes/issues/61018

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes # https://github.com/kubernetes/kubernetes/issues/61018

**Special notes for your reviewer**:

**Release note**:

```release-note
None.
```
@smarterclayton

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Fix minor error in the 1.10 release note.

**What this PR does / why we need it**:
Fix minor error in the 1.10 release note.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note

```

Marks 1.10 as the current release

Add in human curated release notes for 1.10

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Fix help text for cpu manager

**What this PR does / why we need it**:
Fixes incorrect text associated with the flag as the feature is now beta.

**Special notes for your reviewer**:
This feature is beta in 1.10.

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 60455, 61365, 61375, 61597, 61491). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Updated lv-provisioner image to v2.1.0 in e2e tests

**What this PR does / why we need it**:

This PR updates the [local volume provisioner](https://github.com/kubernetes-incubator/external-storage/tree/master/local-volume) to v2.1.0 in the e2e tests for k8s v1.10.

**Which issue(s) this PR fixes**:
Fixes #61596

**Special notes for your reviewer**:

The following commands can be used to perform these tests:
```
$ make WHAT=test/e2e/e2e.test

$ KUBE_FEATURE_GATES="BlockVolume=true" NUM_NODES=1 go run hack/e2e.go -- --up

$ go run hack/e2e.go -- --test --test_args='--ginkgo.focus=PersistentVolumes-local.*Local.*volume.*provisioner’
```

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 60455, 61365, 61375, 61597, 61491). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix #61363, Bounded retries for cloud allocator.

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #61363

**Special notes for your reviewer**:
Changed the tracking of nodesInProcessing from a set to map[string]int so that we can count the
number of times we re-process the node and not re-queue in case updateMaxRetries exceeded.

**Release note**:

```release-note
Bound cloud allocator to 10 retries with 100 ms delay between retries.
```

Automatic merge from submit-queue (batch tested with PRs 60455, 61365, 61375, 61597, 61491). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Check apps/v1 StatefulSet available before starting its controller

**What this PR does / why we need it**: StatefulSet controller was bumped to use `apps/v1.StatefulSet` already. Without this change, StatefulSet controller will continue to work, but will be broken when `apps/v1beta2.StatefulSet` is removed or disabled. 

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 60455, 61365, 61375, 61597, 61491). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

removes custom scalers from kubectl

**What this PR does / why we need it**: this PR removes custom scalers from kubectl and uses the genericScaler instead.

**Release note**:

```
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add e2e test for Custom Metrics API with new Stackdriver resource model and External Metrics API.

**What this PR does / why we need it**:
Add e2e test for Custom Metrics API with new Stackdriver resource model and External Metrics API.

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

[GCE] Remove validation of Alpha Feature Gates

**What this PR does / why we need it**:
As per discussion with @bowei, @freehan, and @nicksardo , remove validation on Alpha Feature Gates so we can be more flexible with adding or removing new features.

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Removing the always pull policy on ingress image for CDK.

**What this PR does / why we need it**:
Removing the always pull policy. This caused some trouble when a registry was down and is unnecessary. Kubernetes will default to IfNotPresent.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
None, but I could make an issue if desired.
**Special notes for your reviewer**:

**Release note**:

```release-note
Removed always pull policy from the template for ingress on CDK.
```

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Fix comments and small fixes

**What this PR does / why we need it**: Fix some comments, and remove trivial duplicates. 

**Release note**:
```release-note
None
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fixes permissions error for Local SSD when created with NODE_LOCAL_SSDS flag

**What this PR does / why we need it**:
The PR fixes a permissions error introduced in 1.9 whereby users are unable to write to their Local SSD if it is created with the `NODE_LOCAL_SSDS` flag.

This will need to be cherrypicked to 1.9 and 1.10.

/sig storage
/kind bug
/assign @msau42 

```release-note
NONE
```

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escape literal percent sign when formatting

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #61503

**Special notes for your reviewer**:
/assign @janetkuo @liggitt 
/cc @kubernetes/sig-cli-bugs 

**Release note**:

```release-note
escape literal percent sign when formatting
```

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fix error message about DeleteOptions

Before this change:
```shell
$ curl -k  -XDELETE  -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: kubectl/v1.10.0 (linux/amd64) kubernetes/d7e5bd19" http://172.16.29.130:8080/apis/extensions/v1beta1/namespaces/default/deployments/nginx --data '{"propagationPolicy":"Background11111"}'
{"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":" \"\" is invalid: []: Invalid value: v1.DeleteOptions{TypeMeta:v1.TypeMeta{Kind:\"\", APIVersion:\"\"}, GracePeriodSeconds:(*int64)(nil), Preconditions:(*v1.Preconditions)(nil), OrphanDependents:(*bool)(nil), PropagationPolicy:(*v1.DeletionPropagation)(0xc429aa9ed0)}: DeletionPropagation need to be one of \"Foreground\", \"Background\", \"Orphan\" or nil","reason":"Invalid","details":{"causes":[{"reason":"FieldValueInvalid","message":"Invalid value: v1.DeleteOptions{TypeMeta:v1.TypeMeta{Kind:\"\", APIVersion:\"\"}, GracePeriodSeconds:(*int64)(nil), Preconditions:(*v1.Preconditions)(nil), OrphanDependents:(*bool)(nil), PropagationPolicy:(*v1.DeletionPropagation)(0xc429aa9ed0)}: DeletionPropagation need to be one of \"Foreground\", \"Background\", \"Orphan\" or nil","field":"[]"}]},"code":422}
```
After this change:
```shell
$ curl -k  -XDELETE  -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: kubectl/v1.10.0 (linux/amd64) kubernetes/d7e5bd19" http://172.16.29.130:8080/apis/extensions/v1beta1/namespaces/default/deployments/nginx --data '{"propagationPolicy":"Background11111"}'
{"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"DeleteOptions.meta.k8s.io \"\" is invalid: propagationPolicy: Unsupported value: \"Foreground1111\": supported values: \"Foreground\", \"Background\", \"Orphan\", \"nil\"","reason":"Invalid","details":{"group":"meta.k8s.io","kind":"DeleteOptions","causes":[{"reason":"FieldValueNotSupported","message":"Unsupported value: \"Foreground1111\": supported values: \"Foreground\", \"Background\", \"Orphan\", \"nil\"","field":"propagationPolicy"}]},"code":422}
```

**Release note**:
```
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

remove duplicated validation from podsecuritypolicy

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Cluster Autoscaler 1.2.0

```release-note
Cluster Autoscaler 1.2.0 - release notes available here: https://github.com/kubernetes/autoscaler/releases
```

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cluster/update-storage-objects.sh: Fix to ignore deleted objects

**What this PR does / why we need it**:
This PR fixes to ignore deleted objects in `cluster/update-storage-objects.sh`.  If it failed to fetch the object at [here](https://github.com/kubernetes/kubernetes/blob/master/cluster/update-storage-objects.sh#L101), it must ignore the object, but currently this script exits as follows after 5 tries:

```
$ ./cluster/update-storage-objects.sh
Error from server (NotFound): events "minikube.151d894772669d981" not found
Looks like minikube.151d894772669d98 got deleted. Ignoring it
Error from server (NotFound): events "minikube.151d894772669d981" not found
Looks like minikube.151d894772669d98 got deleted. Ignoring it
Error from server (NotFound): events "minikube.151d894772669d981" not found
Looks like minikube.151d894772669d98 got deleted. Ignoring it
Error from server (NotFound): events "minikube.151d894772669d981" not found
Looks like minikube.151d894772669d98 got deleted. Ignoring it
Error from server (NotFound): events "minikube.151d894772669d981" not found
Looks like minikube.151d894772669d98 got deleted. Ignoring it
Error: failed to update events/minikube.151d894772669d98 in default namespace after 5 tries
```

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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meta/v1: check error from json.Unmarshal()

Release note:
```
NONE
```

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Fix unix socket subpath mount

Fixes https://github.com/kubernetes/kubernetes/issues/61377

```release-note
Fix mounting of UNIX sockets(and other special files) in subpaths
```

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wire through json/yaml print flags

**Release note**:
```release-note
NONE
```

Begin implementing pieces needed to retrieve json, yaml printers from a set of flags.
Proposal: https://docs.google.com/document/d/19ZZFVe9oD1KQmk5uExggRWtRl_hKGfYnBXvHZJlgEro/edit#heading=h.pnvbfi14v4zz

cc @deads2k @soltysh @pwittrock

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e2e:Enable CSI tests

**What this PR does / why we need it**:
Enable CSI e2e tests now that CSI objects in Kubernetes are Beta.

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Do not consider pods being deleted in the same namespace for spreading purposes  for service anti-affinity priority similar to selectorspread priority.

**What this PR does / why we need it**:

Currently for service anti-affinity priority, pods being deleted in the same namespace are being considered in computation for spreading purposes, which should not happen. This PR aligns it with selectorspread priority, which also does spreading and does not consider pods being deleted in the same namespace. 

@bsalamat @timothysc @kubernetes/sig-scheduling-bugs 

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
None
```