Automatic merge from submit-queue (batch tested with PRs 50213, 50707, 49502, 51230, 50848)

Refactor CephFS PV spec

**What this PR does / why we need it**:
refactor CephFS Volume Persistent Volume Spec so CephFS PV's SecretRef allows referencing a secret from a persistent volume in any namespace. This allows locating credentials for persistent volumes in namespaces other than the one containing the PVC.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/kubernetes-incubator/external-storage/issues/309

**Special notes for your reviewer**:
@kubernetes/sig-storage-api-reviews 

**Release note**:

```release-note
Allow CephFS PV to specify a namespace for secret
```

Automatic merge from submit-queue (batch tested with PRs 50213, 50707, 49502, 51230, 50848)

Fix forkedjson.LookupPatchMetadata for pointers.

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

Fixes a bug in `forkedjson.LookupPatchMetadata`. It is triggered when called with some API objects such as the `Selector` field (a pointer) in https://godoc.org/k8s.io/api/extensions/v1beta1#DeploymentSpec.

The provided test case fails without the lines added to `fields.go`.

**Which issue this PR fixes** N/A

**Special notes for your reviewer**:

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

Automatic merge from submit-queue (batch tested with PRs 50213, 50707, 49502, 51230, 50848)

Fix comment of cronjob utils.go

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

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/kubernetes/kubernetes/issues/50951

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 51224, 51191, 51158, 50669, 51222)

Change the FakeCloudAddressService to store Alpha objects internally

The change assumes the compute Alpha object is the superset of the v1
object. By storing the Alpha objects internally in the fake, we can
convert them to Beta and v1 to test different functions.

Automatic merge from submit-queue (batch tested with PRs 51224, 51191, 51158, 50669, 51222)

Modify the initialization of results in generic_scheduler.go
Signed-off-by: zhangjie <zhangjie0619@yeah.net>



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

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 51224, 51191, 51158, 50669, 51222)

Enable overlay2 on cos-m60 in node e2e tests

Ref: https://github.com/kubernetes/kubernetes/issues/42926

- Restart docker with `-s overlay2` in cloud-init before running all node e2e tests. I have to copy the systemd unit file to `/etc/systemd/system` because the `/usr/lib/systemd/system/` is read only.
- Updated node e2e tests to use the new cos-m60 image.
- The name of the cloud init file (`cos-init-live-restore.yaml`) does not indicate overlay2 will be enabled, but I can't just change the name in this PR, since it's referenced in test-infra.

**Release note**:

```
None
```

/assign @Random-Liu

Automatic merge from submit-queue (batch tested with PRs 51224, 51191, 51158, 50669, 51222)

	Fix backward compatibility for renamed OpenAPI definitions

Fixes #47372

Automatic merge from submit-queue (batch tested with PRs 51224, 51191, 51158, 50669, 51222)

StatefulSet: Deflake e2e "restart" phase.

This addresses another source of flakiness found while investigating #48031.

The test used to scale the StatefulSet down to 0, wait for ListPods to return 0 matching Pods, and then scale the StatefulSet back up.

This was prone to a race in which StatefulSet was told to scale back up before it had observed its own deletion of the last Pod, as evidenced by logs showing the creation of Pod ss-1 prior to the creation of the replacement Pod ss-0.

Instead, we now wait for the controller to observe all deletions before scaling it back up. This should fix flakes of the form:

```
Too many pods scheduled, expected 1 got 2
```

Automatic merge from submit-queue (batch tested with PRs 51148, 50816, 49741, 50858, 51223)

openapi: Change references to be first-class

**What this PR does / why we need it**:
References in the openapi are currently completely hidden from the
model, and just passed through as we walk the tree. The problem is that
they can have a different description and more importantly, different
extensions.

Change them to be first-class citizen, and fully part of the model. It
means that visitors have to implement one more function and decide if
something specific should be done with references. Validation is updated
to just completely ignore them and passthrough (like it was done
before).

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

**Special notes for your reviewer**:

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

Automatic merge from submit-queue (batch tested with PRs 51148, 50816, 49741, 50858, 51223)

cloudprovider.Zones should support external cloud providers

**What this PR does / why we need it**:
Provides methods in cloudprovider.Zones that allows external cloud providers to set the correct zone labels to nodes. Part of https://github.com/kubernetes/kubernetes/issues/48690

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: 
fixes https://github.com/kubernetes/kubernetes/issues/49308

**Special notes for your reviewer**:
Should help with getting ccm/external cloud providers to beta. 

**Release note**:
```release-note
cloudprovider.Zones should support external cloud providers
```

cc @luxas @wlan0 @thockin

Automatic merge from submit-queue (batch tested with PRs 51148, 50816, 49741, 50858, 51223)

Add tests around TableConvert and server side printing

Also wire in more table printers

@fabianofranz

Automatic merge from submit-queue (batch tested with PRs 51148, 50816, 49741, 50858, 51223)

Remove redundant err definition

**What this PR does / why we need it**:
Remove redundant err definition，err is defined by using "err :=" at line 107

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

Automatic merge from submit-queue (batch tested with PRs 51148, 50816, 49741, 50858, 51223)

Enable finalizers independent of GC enablement

Decouple finalizer processing from garbage collection configuration.
Finalizers should be effective even when garbage collection is disabled
for a given store.

Fixes https://github.com/kubernetes/kubernetes/issues/50528.

```release-note
NONE
```

/cc @kubernetes/sig-api-machinery-bugs 
/cc @caesarxuchao @liggitt @sttts @pmorie

Automatic merge from submit-queue

fix fuzzer for hostpath type that the path can be an empty string

**What this PR does / why we need it**:
It seems the path of `HostPath` generated by fuzzer can be an empty string. This is causing [pull-kubernetes-unit](https://k8s-gubernator.appspot.com/builds/kubernetes-jenkins/pr-logs/directory/pull-kubernetes-unit) failing.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #51260

**Special notes for your reviewer**:
/assign @thockin @luxas @ixdy 

**Release note**:

```release-note
None
```

Automatic merge from submit-queue

Bump repo-infra dependency to fix go_genrule without sandboxing

**What this PR does / why we need it**: pulls in https://github.com/kubernetes/repo-infra/pull/35, which fixes the bazel build when sandboxing is not available.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #49569 

**Release note**:

```release-note
NONE
```

/assign @spxtr @mikedanese @BenTheElder

Automatic merge from submit-queue

output junit report dir in cmd test

Output junit report dir for easier debug locally, otherwise people need to dive into the code to find the junit report dir. This will save people's time.

```release-note
None
```

Signed-off-by: Huamin Chen <hchen@redhat.com>

Signed-off-by: Huamin Chen <hchen@redhat.com>

Automatic merge from submit-queue (batch tested with PRs 50713, 47660, 51198, 51159, 51195)

kubeadm selfhosting CLI improvements

**What this PR does / why we need it**:
This PR implements three small improvements for kubeadm selfhosting CLI:
- `kubeadm phase selfhosting` should be `kubeadm phase self-hosting from-static-pods`
- add `--cert-dir`flag
- add `--config`flag and manage MixedArguments conditions

**Which issue this PR fixes**:
fixes [#397](https://github.com/kubernetes/kubeadm/issues/397) - `kubeadm phase selfhosting` should be `kubeadm phase self-hosting from-static-pods`

**Special notes for your reviewer**:
cc @luxas
cc @jamiehannaford

Automatic merge from submit-queue (batch tested with PRs 50713, 47660, 51198, 51159, 51195)

Enable apps/v1beta2 Deployment, ReplicaSet, DaemonSet in federation

Fixes #50641
@kubernetes/sig-apps-pr-reviews @kubernetes/sig-federation-pr-reviews 

**Release note**:
```release-note
Federation now supports apps/v1beta2. 
```

Automatic merge from submit-queue (batch tested with PRs 50713, 47660, 51198, 51159, 51195)

kubeapiserver: rename `--experimental-bootstrap-token-auth` to `--enable-bootstrap-token-auth`.

#**What this PR does / why we need it**:
This change renames the API server `--experimental-bootstrap-token-auth` flag to `--enable-bootstrap-token-auth`. The old flag is accepted but generates a warning.

In 1.9, we will drop support for `--experimental-bootstrap-token-auth` entirely.

#### Example of the warning log:
```
$ kube-apiserver --experimental-bootstrap-token-auth --etcd-servers https://127.0.0.1:1234 --service-cluster-ip-range 10.0.1.0/24
Flag --experimental-bootstrap-token-auth has been deprecated, use --enable-bootstrap-token-auth instead.
[...]
```

**Which issue this PR fixes** fixes https://github.com/kubernetes/kubernetes/issues/50613

**Release note**:
```release-note
Renamed the API server flag `--experimental-bootstrap-token-auth` to `--enable-bootstrap-token-auth`. The old value is accepted with a warning in 1.8 and will be removed in 1.9.
```

/sig cli
/sig cluster-lifecycle

cc @luxas

Automatic merge from submit-queue (batch tested with PRs 50713, 47660, 51198, 51159, 51195)

add secret namespace to azure file 

**What this PR does / why we need it**:
allow provisioner to create stoarge account secret in different namespace
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #47452 

**Special notes for your reviewer**:
@liggitt @brendandburns 

**Release note**:

```release-note
Azure file persistent volumes can use a new `secretNamespace` field to reference a secret in a different namespace than the one containing their bound persistent volume claim. The azure file persistent volume provisioner honors a corresponding `secretNamespace` storage class parameter to determine where to place secrets containing the storage account key.
```

Automatic merge from submit-queue (batch tested with PRs 50713, 47660, 51198, 51159, 51195)

Dump installation and configuration logs for master

**What this PR does / why we need it**:
We are dumping out empty configuration and installation logs on master, see `kube-node-configuration.log` and `kube-node-installation.log` on http://gcsweb.k8s.io/gcs/kubernetes-jenkins/logs/ci-kubernetes-e2e-gci-gce/12818/artifacts/bootstrap-e2e-master/.

I guess it is just because [we name the services on master differently](https://github.com/kubernetes/kubernetes/blob/v1.7.3/cluster/gce/gci/master.yaml#L4-L40)?

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #NONE

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue

Fix invalid url link in cluster/addons/registry/auth/README.md

**What this PR does / why we need it**:
Fix invalid url link in `cluster/addons/registry/auth/README.md`.

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Signed-off-by: Huamin Chen <hchen@redhat.com>

Signed-off-by: Huamin Chen <hchen@redhat.com>

The change assumes the compute Alpha object is the superset of the v1
object. By storing the Alpha objects internally in the fake, we can
convert them to Beta and v1 to test different functions.

Automatic merge from submit-queue (batch tested with PRs 47115, 51196, 51204, 51208, 51206)

Update cos-m61 image in benchmark tests

Ref: https://github.com/kubernetes/kubernetes/issues/51205

**Release note**:
```
None
```

Automatic merge from submit-queue (batch tested with PRs 47115, 51196, 51204, 51208, 51206)

Add an OrDie version for AddPostStartHook

Simplifies usage and consolidate the error message so it is always
the same everywhere.

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 47115, 51196, 51204, 51208, 51206)

roundtrip: fix error messages

The error messages had some typos due to which it generated false positives. (encountered in #47263) 

**Release note**:

```release-note
NONE
```

/cc @sttts

Automatic merge from submit-queue (batch tested with PRs 47115, 51196, 51204, 51208, 51206)

Removing push_api_data on kube-api.connected seems to be dead code

**What this PR does / why we need it**: Removing dead code is always good :)

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

**Special notes for your reviewer**: There is no kube-api relation. This method was replace probably at some point by push_service_data firing when kube-api-endpoint.available

**Release note**:

```
```

Automatic merge from submit-queue (batch tested with PRs 47115, 51196, 51204, 51208, 51206)

Delete redundant err definition

**What this PR does / why we need it**:
Delete reduandant err definition
Line 307 has err definition and initialization.


**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue

Remove crash loop "detection" from the dynamic kubelet config feature

**What this PR does / why we need it**:
The subfeature was a cool idea, but in the end it is very complex to
separate Kubelet restarts into crash-loops caused by config vs.
crash-loops caused by other phenomena, like admin-triggered node restarts,
kernel panics, and and process babysitter behavior. Dynamic kubelet config
will be better off without the potential for false positives here.

Removing this subfeature also simplifies dynamic configuration by
reducing persistent state:
- we no longer need to track bad config in a file
- we no longer need to track kubelet startups in a file

**Which issue this PR fixes**: fixes #50216 

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 51193, 51154, 42689, 51189, 51200)

Revert default service-cidr config on kubernetes-master charm

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

This reverts the default service-cidr config in the kubernetes-master charm.

A while back, we changed the default service-cidr in the kubernetes-master charm from `10.152.183.0/24` to `10.152.0.0/16`. In testing, we have found that the charms don't handle this change well, so we are reverting it until we can make the change more safely.

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 51193, 51154, 42689, 51189, 51200)

Add initiatorname in iscsi describe printer.
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>


```release-note-none
```

Automatic merge from submit-queue (batch tested with PRs 51193, 51154, 42689, 51189, 51200)

Re-enable OIR e2e tests.

Re-enabling test skeleton for opaque integer resources originally submitted as part of #41870. The e2e was disabled since it was flaky. This is the first step toward re-enabling them. Currently all cases are skipped, so this exercises only the BeforeEach behavior and the deferred removal of OIRs from a node.

cc @timothysc

Automatic merge from submit-queue (batch tested with PRs 51193, 51154, 42689, 51189, 51200)

Bumped gRPC version to 1.3.0

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

This PR bumps down the version of the vendored version of gRPC from v1.5.1 to v1.3.0
This is needed as part of the Device Plugin API where we expect client and server to use the Keep alive feature in order to detect an error.

Unfortunately I had to also bump the version of `golang.org/x/text` and `golang.org/x/net`.

- Design document: kubernetes/community#695
- PR tracking: [kubernetes/features#368](https://github.com/kubernetes/features/issues/368#issuecomment-321625420)

**Which issue this PR fixes**: fixes #51099
Which was caused by my previous PR updating to 1.5.1

**Special notes for your reviewer**:
@vishh @jiayingz @shyamjvs

**Release note**:
```
Bumped gRPC to v1.3.0
```

Automatic merge from submit-queue (batch tested with PRs 51193, 51154, 42689, 51189, 51200)

Include $USER in network name to not clash for different users' cl…