Automatic merge from submit-queue (batch tested with PRs 41331, 45591, 45600, 45176, 45658)

Updating generic registry to return UID of the deleted resource

Ref https://github.com/kubernetes/kubernetes/issues/42594

cc @kubernetes/sig-api-machinery-pr-reviews @smarterclayton 

```release-note
Updating apiserver to return UID of the deleted resource. Clients can use this UID to verify that the resource was deleted or waiting for finalizers.
```

Automatic merge from submit-queue (batch tested with PRs 41331, 45591, 45600, 45176, 45658)

Fixing typo in ImagePolicyWebhook admission.go

**What this PR does / why we need it**:
Noticed a typo in kubectl events when working with the ImagePolicyWebhook admission controller 

**Special notes for your reviewer**:
first time contributor

Automatic merge from submit-queue (batch tested with PRs 41331, 45591, 45600, 45176, 45658)

Move client/unversioned/remotecommand to client-go

Module remotecommand originally part of kubernetes/pkg/client/unversioned was moved
to client-go/tools, and will be used as authoritative in kubectl, e2e and other places.

Module remotecommand relies on util/exec module which was copied to client-go/pkg/util

Automatic merge from submit-queue (batch tested with PRs 45826, 45747, 45548, 45606, 41766)

CRI: using typed filed for sysctls

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

CRI supports sysctls via annotations [today](https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/api/v1alpha1/runtime/api.proto#L237), we should move them to typed and structured fields instead. (refer [here](https://github.com/kubernetes/kubernetes/issues/30819#issuecomment-253369441))

**Which issue this PR fixes** 

Part of #39130.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 45826, 45747, 45548, 45606, 41766)

fixed typo in cockroachdb-statefulset.yaml

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

typo, the syntax was invalid.

**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 45826, 45747, 45548, 45606, 41766)

Fix typo in name of ss controller

Automatic merge from submit-queue (batch tested with PRs 45826, 45747, 45548, 45606, 41766)

OwnerReferencesPermissionEnforcement ignores pods/status

**What this PR does / why we need it**:
It makes the `OwnerReferencesPermissionEnforcement` admission plug-in ignore pods/status operations.  If a cluster has version skew with its master (1.6) and nodes (1.6-N), the kubelet is doing a pods/status operation and that code path is causing an error because ownerRef has new fields unknown to kubelet.

**Release note**:
```release-note
OwnerReferencesPermissionEnforcement admission plugin ignores pods/status.
```

Automatic merge from submit-queue (batch tested with PRs 45826, 45747, 45548, 45606, 41766)

prevent pods/status from touching ownerreferences

pods/status updates touching ownerreferences causes new fields to be dropped.

I think we really want to protect our metatdata by default with something like https://github.com/kubernetes/kubernetes/pull/45552 .  This fixes the immediate problem.

```release-note
prevent pods/status from touching ownerreferences
```

@derekwaynecarr @eparis

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fix resource typo

CHANGELOG: Add Known Issues for v1.6.3

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Fix the outdated link to the Helm Charts repo

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

It is only a link fix, the repo URL has changed

**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
```

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docs:examples:guestbook: don't advice untagged image

Using untagged images means no version at all, this can cause weird problems.
Right now, `redis:latest` is no longer compatible with the redis version used in the slave service of the example.

Automatic merge from submit-queue (batch tested with PRs 45807, 45814)

Fix invalid bash script in unit test.

This change fix such error when we run "make test":
    "find: invalid expression; you have used a binary operator '-o' with
     nothing before it."

@deads2k 

**Release note**:

```release-note
```

Automatic merge from submit-queue (batch tested with PRs 45807, 45814)

Fix typo.

Automatic merge from submit-queue (batch tested with PRs 45070, 45821, 45732, 45494, 45789)

Rename vars scheduledJob to cronJob

**What this PR does / why we need it**:
Rename vars scheduledJob to cronJob

**Special notes for your reviewer**:
refer to #45480

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 45070, 45821, 45732, 45494, 45789)

Fix lint errors in juju kubernetes master and e2e charms

**What this PR does / why we need it**: Fixes style error in the Juju charms

**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**:

```
Code style fixes in Juju charms
```

Automatic merge from submit-queue (batch tested with PRs 45070, 45821, 45732, 45494, 45789)

apiextesions-server integration tests: test multiple registration

**What this PR does / why we need it**:
Add integration test for Multiple registrations XREF: #45511

**Special notes for your reviewer**:
@deads2k my first plan was to submit one single PR for both tests but I'm facing one issue with resources deregistration. Get in touch via slack

Automatic merge from submit-queue (batch tested with PRs 45070, 45821, 45732, 45494, 45789)

Minor fix in run-gcloud-compute-with-retries output piping

To work with older versions of bash.

cc @wojtek-t @gmarek

Automatic merge from submit-queue

Uses container/heap for DelayingQueue

The current implementation of DelayingQueue doesn't perform very well when a large number of items (at random delays) are inserted. The original authors seemed to be aware of this and noted it in a `TODO` comment. This is my attempt at switching the implementation to use a priority queue based on `container/heap`.

Benchmarks from before the change:
```
╰─ go test -bench=. -benchmem | tee /tmp/before.txt
BenchmarkDelayingQueue_AddAfter-8         300000            256824 ns/op             520 B/op          3 allocs/op
PASS
ok      k8s.io/kubernetes/staging/src/k8s.io/client-go/util/workqueue   77.237s
```

After:
```
╰─ go test -bench=. -benchmem | tee /tmp/after.txt
BenchmarkDelayingQueue_AddAfter-8         500000              3519 ns/op             406 B/op          4 allocs/op
PASS
ok      k8s.io/kubernetes/staging/src/k8s.io/client-go/util/workqueue   2.969s
```

Comparison:
```
╰─ benchcmp /tmp/before.txt /tmp/after.txt
benchmark                             old ns/op     new ns/op     delta
BenchmarkDelayingQueue_AddAfter-8     256824        3519          -98.63%

benchmark                             old allocs     new allocs     delta
BenchmarkDelayingQueue_AddAfter-8     3              4              +33.33%

benchmark                             old bytes     new bytes     delta
BenchmarkDelayingQueue_AddAfter-8     520           406           -21.92%
```

I also find the `container/heap`-based code a bit more easy to understand. The implementation of the PriorityQueue is based on the documentation for `container/heap`.

Feedback definitely welcomed. This is one of my first contributions.

```release-note
NONE
```

client-go/pkt/util was removed in favor of client-go util, which consists
only from CodeExitError and ExitError interface

Module remotecommand originally part of kubernetes/pkg/client/unversioned was moved
to client-go/tools, and will be used as authoritative in kubectl, e2e and other places.

Module remotecommand relies on util/exec module which will be copied to client-go/pkg/util

Automatic merge from submit-queue

kube-apiextensions-server: Fix potential SEGV with null delegate handler

**What this PR does / why we need it**:
In the kube-apiextensions-server there is a fallback value for `null` delegate to `http.NotFoundHandler()` in handling group and versions discovery, but no fallback for custom resources endpoint.
It leads to SEGV when running with `genericapiserver.EmptyDelegate`.

Automatic merge from submit-queue

Fix discovery version for autoscaling to be v1

The order of the storage setup blocks in the setup for the autoscaling
API group was accidentally inverted, meaning that if the v2alpha1 API
group was turned on, it would be set to the preferred API group-version
for discovery.

This was unintentional; the latest stable version should (v1) should be
preferred instead.

**Release note**:
```release-note
Ensure that autoscaling/v1 is the preferred version for API discovery when autoscaling/v2alpha1 is enabled.
```

Automatic merge from submit-queue

[Federation] Fix federated service reconcilation issue due to addition of External…

…TrafficPolicy field to v1.Service

**What this PR does / why we need it**:
New fields (ExternalTrafficPolicy) are introduced to v1.Service by this PR #41162. If this field is not specified in service spec, the service controller will assign default and updates the service spec.
In federation, the service spec is not updated and we continuously try to reconcile as the federated service and the service in federated cluster do not match.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #45795


**Special notes for your reviewer**:

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

cc @kubernetes/sig-federation-bugs @madhusudancs

This change fix such error when we run "make test":
    "find: invalid expression; you have used a binary operator '-o' with
     nothing before it."

Automatic merge from submit-queue

util/iptables: fix cross-build failures due to syscall.Flock()

Fixes: https://github.com/kubernetes/kubernetes/issues/45554
Related: https://github.com/kubernetes/kubernetes/pull/44895

@luxas @k82cn @danwinship

Fixed typo.

Fix federated service reconcilation issue due to addition of ExternalTrafficPolicy field to v1.Service