Automatic merge from submit-queue

Delete meaningless check

**What this PR does / why we need it**:
Delete meaningless check
The deleted check is redundant.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 46681, 46786, 46264, 46680, 46805)

Bump cluster-proportional-autoscaler to 1.1.2

From https://github.com/kubernetes-incubator/cluster-proportional-autoscaler/pull/33.

/assign @bowei 

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 46681, 46786, 46264, 46680, 46805)

Enable Dialer on the Aggregator

Centralize the creation of the dialer during startup.
Have the dialer then passed in to both APIServer and Aggregator.
Aggregator the uses the dialer as its Transport base.

**What this PR does / why we need it**:Enables the Aggregator to use the Dialer/SSHTunneler to connect to the user-apiserver.

**Which issue this PR fixes** : fixes ##46679

**Special notes for your reviewer**:

**Release note**: None

Automatic merge from submit-queue (batch tested with PRs 46681, 46786, 46264, 46680, 46805)

Add annotation for image policy webhook fail open.

**What this PR does / why we need it**: there's no good way to audit log if binary verification fails open. Adding an annotation can solve that, and provide a useful tool to audit [non-malicious] containers.

**Release note**: add the annotation "alpha.image-policy.k8s.io/failed-open=true" to pods created when the image policy webhook fails open.

```release-note
Add the `alpha.image-policy.k8s.io/failed-open=true` annotation when the image policy webhook encounters an error and fails open.
```

Automatic merge from submit-queue (batch tested with PRs 46681, 46786, 46264, 46680, 46805)

Added sig leads alias to OWNERS_ALIAS

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

Add sig leads section to OWNERS_ALIASES so sig leads without maintainers access can add status labels to issues (important to 1.7 milestone)

**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**:

Let me know you know of additional sig leads that should be added.

**Release note**:

```NONE
```

Automatic merge from submit-queue (batch tested with PRs 46681, 46786, 46264, 46680, 46805)

Fix for-loop and err definition

**What this PR does / why we need it**:
we can use j directly, it's odd to use i then get j through i.
we can put err definition into if{} , after all the para. was only used in if{}.

**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 40760, 46706, 46783, 46742, 46751)

Pre-generate SNI test certs

Pre-generates test certs for SNI tests, since doing this dynamically can take a loooong time in entropy-starved or CPU-bound test envs (like in a container).

Automatic merge from submit-queue (batch tested with PRs 40760, 46706, 46783, 46742, 46751)

Update gengo to the latest

Automatic merge from submit-queue (batch tested with PRs 40760, 46706, 46783, 46742, 46751)

complete the controller context for init funcs

This completes the conversion to initFuncs for the controller initialization to make easier and more manageable to add them.

Automatic merge from submit-queue (batch tested with PRs 40760, 46706, 46783, 46742, 46751)

Fix unit test for kubectl create role

When expected err is not nil but error deos not happen, we should report error in unit test.
**Release note**:

```
NONE
```

Automatic merge from submit-queue (batch tested with PRs 40760, 46706, 46783, 46742, 46751)

enable kubelet csr bootstrap in GCE/GKE

@jcbsmpsn @pipejakob 

Fixes https://github.com/kubernetes/kubernetes/issues/31168

```release-note
Enable kubelet csr bootstrap in GCE/GKE
```

Automatic merge from submit-queue

Implement Daemonset history

~Depends on #45867 (the 1st commit, ignore it when reviewing)~ (already merged)

Ref https://github.com/kubernetes/community/pull/527/ and https://github.com/kubernetes/community/pull/594

@kubernetes/sig-apps-api-reviews @kubernetes/sig-apps-pr-reviews @erictune @kow3ns @lukaszo @kargakis 

---

TODOs:
- [x] API changes
  - [x] (maybe) Remove rollback subresource if we decide to do client-side rollback 
- [x] deployment controller 
  - [x] controller revision
    - [x] owner ref (claim & adoption)
    - [x] history reconstruct (put revision number, hash collision avoidance)
    - [x] de-dup history and relabel pods
    - [x] compare ds template with history 
  - [x] hash labels (put it in controller revision, pods, and maybe deployment)
  - [x] clean up old history 
  - [x] Rename status.uniquifier when we reach consensus in #44774 
- [x] e2e tests 
- [x] unit tests 
  - [x] daemoncontroller_test.go 
  - [x] update_test.go 
  - [x] ~(maybe) storage_test.go // if we do server side rollback~

kubectl part is in #46144

--- 

**Release note**:

```release-note
```

Kube-proxy cleanups

Automatic merge from submit-queue

reset resultRun on pod restart

xref https://bugzilla.redhat.com/show_bug.cgi?id=1455056

There is currently an issue where, if the pod is restarted due to liveness probe failures exceeding failureThreshold, the failure count is not reset on the probe worker.  When the pod restarts, if the liveness probe fails even once, the pod is restarted again, not honoring failureThreshold on the restart.

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: busybox
spec:
  containers:
  - name: busybox
    image: busybox
    command:
    - sleep
    - "3600"
    livenessProbe:
      httpGet:
        path: /healthz
        port: 8080
      initialDelaySeconds: 3
      timeoutSeconds: 1
      periodSeconds: 3
      successThreshold: 1
      failureThreshold: 5
  terminationGracePeriodSeconds: 0
```

Before this PR:
```
$ kubectl create -f busybox-probe-fail.yaml 
pod "busybox" created
$ kubectl get pod -w
NAME      READY     STATUS    RESTARTS   AGE
busybox   1/1       Running   0          4s
busybox   1/1       Running   1         24s
busybox   1/1       Running   2         33s
busybox   0/1       CrashLoopBackOff   2         39s
```

After this PR:
```
$ kubectl create -f busybox-probe-fail.yaml
$ kubectl get pod -w
NAME      READY     STATUS              RESTARTS   AGE
busybox   0/1       ContainerCreating   0          2s
busybox   1/1       Running   0         4s
busybox   1/1       Running   1         27s
busybox   1/1       Running   2         45s
```

```release-note
Fix kubelet reset liveness probe failure count across pod restart boundaries
```

Restarts are now happen at even intervals.

@derekwaynecarr

Automatic merge from submit-queue (batch tested with PRs 46782, 46719, 46339, 46609, 46494)

Do not log the content of pod manifest if parsing fails.

**What this PR does / why we need it**:
- ~~only accepts text/plain config file~~
- ~~not log config file content when it's invalid~~

Do not log the content of pod manifest if parsing fails.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #46493

**Special notes for your reviewer**:
/cc @yujuhong 

@sig-node-reviewers

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 46782, 46719, 46339, 46609, 46494)

Fix inconsistency in finding cni binaries

Fixes [#46476]
Signed-off-by: Abhinav Dahiya <abhinav.dahiya@coreos.com>



**What this PR does / why we need it**:
This fixes the inconsistency in finding the appropriate cni binaries. 

Currently `lo` cniNetwork follows vendorCniDir > binDir whereas default for all others is binDir > vendorCniDir. This PR makes vendorCniDir > binDir as default behavior.

**Why we need it**:
Hypercube right now ships cni binaries in /opt/cni/bin. 
And to use latest version of calico you need to override kubelet's /opt/cni/bin from host which means all other cni plugins (flannel, loopback etc...) have to be mounted from host too. Keeping vendordir at higher order allows easy installation of newer versions of plugins.

Automatic merge from submit-queue (batch tested with PRs 46782, 46719, 46339, 46609, 46494)

update default translation of annotations

**What this PR does / why we need it**:
```
using the local cluster. the help of kubectl is not corrent
# ./cluster/kubectl.sh
.......
Settings Commands:
  label          Update the labels on a resource
  annotate       Update the annotations on a resourcewatch is only supported on individual resources and resource
collections - %d resources were found
  completion     Output shell completion code for the specified shell (bash or zsh)

Other Commands:
  api-versions   Print the supported API versions on the server, in the form of "group/version"
  config         Modify kubeconfig files
  help           Help about any command
  plugin         Runs a command-line plugin
  version        Print the client and server version information

Use "kubectl <command> --help" for more information about a given command.
Use "kubectl options" for a list of global command-line options (applies to all commands).

```
**Which issue this PR fixes**:

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 46782, 46719, 46339, 46609, 46494)

Support custom domains in the cockroachdb example's init container

This switches from using v0.1 of the peer-finder image to a version that
includes https://github.com/kubernetes/contrib/pull/2013

While I'm here, switch the version of cockroachdb from 1.0 to 1.0.1

```release-note
NONE
```

@tschottdorf

Automatic merge from submit-queue

Add some initial resource limits to the ip-masq-agent.

These limits were based on observing  the agent over roughly a day RES was typically  ~4M for me but I'd like to make sure we have some headroom.  If there was a huge config map then this could increase  slightly but not significantly since we only allow 64 entries. 

VmPeak:    11164 kB
VmSize:    11164 kB
VmLck:         0 kB
VmPin:         0 kB
VmHWM:      7652 kB
VmRSS:      4260 kB
VmData:     7612 kB
VmStk:       136 kB
VmExe:      1856 kB
VmLib:         0 kB
VmPTE:        40 kB
VmPMD:        20 kB
VmSwap:        0 kB

Automatic merge from submit-queue (batch tested with PRs 46620, 46732, 46773, 46772, 46725)

Fix AppArmor test for docker 1.13

... & better debugging.

The issue is that we run the pod containers in a shared PID namespace with docker 1.13, so PID 1 is no longer the container's root process. Since it's messy to get the container's root process, I switched to using `/proc/self` to read the apparmor profile. While this wouldn't catch a regression that caused only the init process to run with the wrong profile, I think it's a good approximation.

/cc @aulanov @Amey-D

Automatic merge from submit-queue (batch tested with PRs 46620, 46732, 46773, 46772, 46725)

apiserver: avoid resolving 'localhost'

Fixes https://github.com/kubernetes/kubernetes/issues/46767.

Automatic merge from submit-queue (batch tested with PRs 46620, 46732, 46773, 46772, 46725)

Added missing documentation to NodeInstanceGroup.

**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
```

Automatic merge from submit-queue (batch tested with PRs 46620, 46732, 46773, 46772, 46725)

Instrument advanced auditing

Add prometheus metrics for audit logging, including:

- A total count of audit events generated and sent to the output backend
- A count of audit events that failed to be audited due to an error (per backend)
- A count of request audit levels (1 per request)

For https://github.com/kubernetes/features/issues/22

- [x] TODO: Call `HandlePluginError` from the webhook backend, once https://github.com/kubernetes/kubernetes/pull/45919 merges (in this or a separate PR, depending on timing of the merge)

/cc @ihmccreery @sttts @soltysh @ericchiang

Automatic merge from submit-queue (batch tested with PRs 46620, 46732, 46773, 46772, 46725)

Improving test coverage for kubelet/kuberuntime.

**What this PR does / why we need it**:
Increases test coverage for kubelet/kuberuntime 
https://github.com/kubernetes/kubernetes/issues/46123

**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/46123

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue

Adding a metadata proxy addon

**What this PR does / why we need it**: adds a metadata server proxy daemonset to hide kubelet secrets.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: this partially addresses #8867

**Special notes for your reviewer**:

**Release note**: the gce metadata server can be hidden behind a proxy, hiding the kubelet's token.

```release-note
The gce metadata server can be hidden behind a proxy, hiding the kubelet's token.
```

Automatic merge from submit-queue (batch tested with PRs 36721, 46483, 45500, 46724, 46036)

retry clientCA post start hook on transient failures

@smarterclayton retries the poststarthook you saw failing.

Having looked through, it seems that I didn't kill the server on the failure.

Automatic merge from submit-queue (batch tested with PRs 36721, 46483, 45500, 46724, 46036)

stop special casing the loopback connection for aggregator

Fixes a TODO for the aggregator loopback connection.

Automatic merge from submit-queue (batch tested with PRs 36721, 46483, 45500, 46724, 46036)

AWS: Allow configuration of a single security group for ELBs

**What this PR does / why we need it**:
AWS has a hard limit on the number of Security Groups (500).  Right now every time an ELB is created Kubernetes is creating a new Security Group.  This allows for specifying a Security Group to use for all ELBS

**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**:
For some reason the Diff tool makes this look like it was way more changes than it really was. 
**Release note**:

```release-note
```

Automatic merge from submit-queue (batch tested with PRs 36721, 46483, 45500, 46724, 46036)

Federation: Minor corrections in service controller and add a unit testcase

**What this PR does / why we need it**:
This PR fixes few outdated comments in federation service controller and few other minor fixes.
This also adds a unit test case to test federated service deletion.


/assign @quinton-hoole 
/cc @marun @kubernetes/sig-federation-pr-reviews 

```release-note
NONE
```

Automatic merge from submit-queue

Add initializer support to admission and uninitialized filtering to rest storage

Initializers are the opposite of finalizers - they allow API clients to react to object creation and populate fields prior to other clients seeing them.

High level description:

1. Add `metadata.initializers` field to all objects
2. By default, filter objects with > 0 initializers from LIST and WATCH to preserve legacy client behavior (known as partially-initialized objects)
3. Add an admission controller that populates .initializer values per type, and denies mutation of initializers except by certain privilege levels (you must have the `initialize` verb on a resource)
4. Allow partially-initialized objects to be viewed via LIST and WATCH for initializer types
5. When creating objects, the object is "held" by the server until the initializers list is empty
6. Allow some creators to bypass initialization (set initializers to `[]`), or to have the result returned immediately when the object is created.

The code here should be backwards compatible for all clients because they do not see partially initialized objects unless they GET the resource directly. The watch cache makes checking for partially initialized objects cheap. Some reflectors may need to change to ask for partially-initialized objects.

```release-note
Kubernetes resources, when the `Initializers` admission controller is enabled, can be initialized (defaulting or other additive functions) by other agents in the system prior to those resources being visible to other clients.  An initialized resource is not visible to clients unless they request (for get, list, or watch) to see uninitialized resources with the `?includeUninitialized=true` query parameter.  Once the initializers have completed the resource is then visible.  Clients must have the the ability to perform the `initialize` action on a resource in order to modify it prior to initialization being completed.
```

Automatic merge from submit-queue

Close file after os.Open()

None

Automatic merge from submit-queue

fix cert dir in kubeadm

1.fixes https://github.com/kubernetes/kubeadm/issues/232
2. use manifests as a constant

Automatic merge from submit-queue

update gophercloud that fixed code format

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

mainly to include [#265](https://github.com/gophercloud/gophercloud/pull/265), which fixed the code format including below two files:

* vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/v1/apiversions/urls.go
* vendor/github.com/gophercloud/gophercloud/openstack/compute/v2/images/results.go

1. Create controllerrevisions (history) and label pods with template
   hash for both RollingUpdate and OnDelete update strategy
2. Clean up old, non-live history based on revisionHistoryLimit
3. Remove duplicate controllerrevisions (the ones with the same template)
   and relabel their pods
4. Update RBAC to allow DaemonSet controller to manage
   controllerrevisions
5. In DaemonSet controller unit tests, create new pods with hash labels

1. Add revisionHistoryLimit (default 10), collisionCount, and validation code
2. Add daemonset-controller-hash label, and deprecate templateGeneration

Automatic merge from submit-queue (batch tested with PRs 46456, 46675, 46676, 46416, 46375)

prevent illegal verb/name combinations in default policy rules

Names aren't presented with some kinds of "normal" verbs.  This prevents people from making common mistakes.

@timothysc as I noted in your pull.  This will prevent some classes of errors.

Automatic merge from submit-queue (batch tested with PRs 46456, 46675, 46676, 46416, 46375)

Fix doc about Verb for advanced audit feature

This patch is commited to address the following comment:
https://github.com/kubernetes/kubernetes/pull/45315#discussion_r117107507
**Release note**:

```
NONE
```