Automatic merge from submit-queue (batch tested with PRs 50711, 50742, 50204)

Fix comment of limitranges

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

The comment of limitrages' API seems to be copied from
pkg/registry/autoscaling/horizontalpodautoscaler/storage/storage.go
with the other implementation code.
It is a little difficult to understand what is the API, then this
PR fixes it.

Automatic merge from submit-queue (batch tested with PRs 50670, 50332)

e2e test for local storage mount point

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

We discovered that kubernetes can treat local directories and actual mountpoints differently. For example, https://github.com/kubernetes/kubernetes/issues/48331. The current local storage e2e tests use directories.

This PR introduces a test that creates a tmpfs and mounts it, and runs one of the local storage e2e tests.

**Which issue this PR fixes**: fixes https://github.com/kubernetes/kubernetes/issues/49126

**Special notes for your reviewer**:

I cherrypicked PR https://github.com/kubernetes/kubernetes/pull/50177, since local storage e2e tests are broken in master on 2017-08-08 due to "no such host" error. This PR replaces NodeExec with SSH commands.

You can run the tests using the following commands:
``` 
$ NUM_NODES=1 KUBE_FEATURE_GATES="PersistentLocalVolumes=true" go run hack/e2e.go -- -v --up
$ go run hack/e2e.go -- -v --test --test_args="--ginkgo.focus=\[Feature:LocalPersistentVolumes\]"
```

Here are the summary of results from my test run:
```
Ran 9 of 651 Specs in 387.905 seconds
SUCCESS! -- 9 Passed | 0 Failed | 0 Pending | 642 Skipped PASS

Ginkgo ran 1 suite in 6m29.369318483s
Test Suite Passed
2017/08/08 11:54:01 util.go:133: Step './hack/ginkgo-e2e.sh --ginkgo.focus=\[Feature:LocalPersistentVolumes\]' finished in 6m32.077462612s
```

**Release note**:
`NONE`

Automatic merge from submit-queue

Make kube::util::ensure_clean_working_dir more verbose in log files

Makes it easier to understand why files seem to be changed during CI build, especially
autogenerated files like conversions.

Automatic merge from submit-queue

Use nodePortOp for allocating healthCheck nodePort

**What this PR does / why we need it**: Allocate healthCheck nodePort via nodePortOp so that we won't leak port on failure.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #49999

**Special notes for your reviewer**:
/assign @xiangpengzhao @thockin 


**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue

Bump Cluster Autoscaler to 0.6.1

Couple minor bugfixes and godep refresh.

Do not merge until I complete the tests.

```release-note
Cluster Autoscaler - fixes issues with taints and updates kube-proxy cpu request.
```

Automatic merge from submit-queue

Fix error message of statefulset test

**What this PR does / why we need it**:
Fix error message of statefulset test
It should be 0 replocas in the error message.
And fix typo from Falied to Failed

**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/50592

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 50694, 50702)

Allow injection of policy in RBAC post start hook

This change allows the RBAC PostStartHook logic to be reused with different policy data when bootstrapping the cluster.  Thus any changes to the bootstrap logic are separated from the policy data.
Signed-off-by: Monis Khan <mkhan@redhat.com>

```release-note
NONE
```

@kubernetes/sig-auth-pr-reviews

Automatic merge from submit-queue (batch tested with PRs 50694, 50702)

Fix make cross build failure

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

had to fix the method getSecurityOpts in helpers_windows.go to
match the implementation in helpers_linux.go from commit:
bf01fa2f


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

Fixes #50675

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

The comment of limitrages' API seems to be copied from
pkg/registry/autoscaling/horizontalpodautoscaler/storage/storage.go
with the other implementation code.
It is a little difficult to understand what is the API, then this
PR fixes it.

Automatic merge from submit-queue

Adds IPv6 test case to kubeadm bootstrap

**What this PR does / why we need it**:
Adds IPv6 test cases in support of kubeadm bootstrap functionality. It's needed to ensure test cases cover IPv6 related networking scenarios.

**Which issue this PR fixes**
This PR is in support of Issue #1443 and Issue #47666

**Special notes for your reviewer**:
Additional PR's will follow to ensure kubeadm fully supports IPv6.

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

/area ipv6

Automatic merge from submit-queue (batch tested with PRs 50198, 49051, 48432)

New kubectl command: `kubectl set service-account`

**What this PR does / why we need it**:
Adds a command to update serviceaccount of resources with pod template

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
fixes #45147
**Special notes for your reviewer**:

**Release note**:

```
NONE
```

Automatic merge from submit-queue (batch tested with PRs 50198, 49051, 48432)

move KubeletConfiguration out of componentconfig API group

I'm splitting #44252 into more manageable steps. This step moves the types and updates references.

To reviewers: the most important changes are the removals from pkg/apis/componentconfig and additions to pkg/kubelet/apis/kubeletconfig. Almost everything else is an import or name update.

I have one unanswered question: Should I create a whole new api scheme for Kubelet APIs rather than register e.g. a kubeletconfig group with the default runtime.Scheme instance? This feels like the right thing, as the Kubelet should be exposing its own API, but there's a big fat warning not to do this in `pkg/api/register.go`. Can anyone answer this?

Automatic merge from submit-queue (batch tested with PRs 50198, 49051, 48432)

Add prefix to common networking e2e tests

**What this PR does / why we need it**:
Common networking e2e tests shared by node and cluster suites should also have prefix `[sig-network]`.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
Umbrella issue #49161

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

**Release note**:

```release-note
NONE
```

had to fix the method getSecurityOpts in helpers_windows.go to
match the implementation in helpers_linux.go from commit:
bf01fa2f

Fixes #50675

This change allows the RBAC PostStartHook logic to be reused with
different policy data when bootstrapping the cluster.  Thus any
changes to the bootstrap logic are separated from the policy data.
Signed-off-by: Monis Khan <mkhan@redhat.com>

Automatic merge from submit-queue (batch tested with PRs 50023, 50639)

Extend SetHeader Requests method ito accept multiple values

This allows to set headers that are multivalued directly.
The headers variable is not directly accessible and currently
SetHeaders allows to set only one value.

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 50023, 50639)

Correct case for starting character of option string

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

Kubectl-conventions.md states:

   "Flag descriptions should start with an uppercase letter and not have a period at the end of a sentence"

There are numerous cases where this is violated in `kubectl/cmd`. This PR is the result of an audit of all source files under `kublet/cmd` and corrects the case of the initial Flag description character.

/sig cli
/kind cleanup
/kind documentation

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

Automatic merge from submit-queue (batch tested with PRs 50626, 50683, 50679, 50684, 50460)

Specify node labels for fakeVolumeHost

**What this PR does / why we need it**:
Adds ability to set arbitrary node labels to type `fakeVolumeHost`.
Allows creation of tests of code that depends on reading node labels using `fakeVolumeHost.GetNodeLabels() `.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 50626, 50683, 50679, 50684, 50460)

registries: simplify deepcopy calls

Automatic merge from submit-queue (batch tested with PRs 50626, 50683, 50679, 50684, 50460)

Base Fluentd image off debian:stretch-slim for systemd with LZ4

To avoid having to copy libsystemd from host system, base off image with LZ4 capable systemd.

Fixes #50242.

```release-notes
fluentd-elasticsearch addon: change the fluentd base image to fix crashes on systems with non-standard systemd installation
```

Automatic merge from submit-queue (batch tested with PRs 50626, 50683, 50679, 50684, 50460)

apiextensions: simplify deepcopy calls

Automatic merge from submit-queue (batch tested with PRs 50626, 50683, 50679, 50684, 50460)

kubeadm: Centralize client create-or-update logic in one package

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

Moves all Create-or-Update logic into one package instead of duplicating that logic all around in the codebase.

**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**:

This PR depends on https://github.com/kubernetes/kubernetes/pull/50214.
Note that commit 2 is the only one that needs reviewing.
This PR is required for https://github.com/kubernetes/kubernetes/pull/48899 (kubeadm upgrade)

**Release note**:

```release-note
NONE
```
@kubernetes/sig-cluster-lifecycle-pr-reviews @mattmoyer @fabriziopandini

Automatic merge from submit-queue

apiserver: simplify deepcopy calls

Automatic merge from submit-queue (batch tested with PRs 50577, 50682)

apimachinery: simplify deepcopy calls

Automatic merge from submit-queue

advanced audit: shutdown batching audit webhook gracefully

Follow-up of https://github.com/kubernetes/kubernetes/pull/50439

When the `stopCh` passed to the batching audit webhook is closed, it stops accepting new events and when `Shutdown` method is called afterwards, it blocks until the last request to the webhook has finished.

/cc @tallclair @soltysh

Automatic merge from submit-queue

Drop extensions internal Network* types

Fixes #46626

Automatic merge from submit-queue

FeatureGate: update comments

The godoc - https://godoc.org/k8s.io/apiserver/pkg/util/feature - does not contain descriptions of the functions. This PR adds them.

**Release note**:

```release-note
NONE
```

/cc @sttts

Automatic merge from submit-queue

Add Priority admission controller

**What this PR does / why we need it**: Add Priority admission controller. This admission controller checks creation and update of PriorityClasses. It also resolves a PriorityClass name of a pod to its integer value.

**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
Add Priority admission controller for monitoring and resolving PriorityClasses.
```

ref/ #47604
ref/ #48646