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Remove unneeded deps

**What this PR does / why we need it**:
Removes unneeded deps that were left behind when the federation code was removed in #53816. This is causing `ci-kubernetes-verify-master` to fail.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #54711

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

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Adds support for v4/v6 loopback dns bind address.

**What this PR does / why we need it**:
Previously, IPv4 Loopback addresses (127.0.0.1) were hard coded into the kubeadm dns deployment manifest. This PR adds support for using an IPv6 Loopback (::1) when the kube-dns Service IP is an IPv6 address.

**Special notes for your reviewer**:
Required for IPv6-only deployments.

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

/area ipv6
/sig network

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local up cluster in ipvs mode by add env 'KUBEPROXY_MODE=ipvs'

**What this PR does / why we need it**:
We can use env 'KUBEPROXY_MODE=ipvs' to up cluster with kube-proxy in ipvs mode.

**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
```

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Updates kube-dns in kubeadm to 1.14.7

**What this PR does / why we need it**:
Adds support for the latest kube-dns image (1.14.7) introduced by https://github.com/kubernetes/kubernetes/pull/54443

**Special notes for your reviewer**:
Required for IPv6 support.

/area ipv6
/sig network

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

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Ability to do object count quota for all namespaced resources

**What this PR does / why we need it**:
- Defines syntax for generic object count quota `count/<resource>.<group>`
- Migrates existing objects to support new syntax with old syntax
- Adds support to quota all standard namespace resources 
- Updates the controller to do discovery and replenishment on those resources
- Updates unit tests
- Tweaks admission configuration around quota
- Add e2e test for replicasets (demonstrate dynamic generic counting)

```
$  kubectl create quota test --hard=count/deployments.extensions=2,count/replicasets.extensions=4,count/pods=3,count/secrets=4
resourcequota "test" created
$ kubectl run nginx --image=nginx --replicas=2
$ kubectl describe quota
Name:                         test
Namespace:                    default
Resource                      Used  Hard
--------                      ----  ----
count/deployments.extensions  1     2
count/pods                    2     3
count/replicasets.extensions  1     4
count/secrets                 1     4
```

**Special notes for your reviewer**:
- simple object count quotas no longer require writing code
- deferring support for custom resources pending investigation about how to share caches with garbage collector.  in addition, i would like to see how this integrates with downstream quota usage in openshift.

**Release note**:
```release-note
Object count quotas supported on all standard resources using `count/<resource>.<group>` syntax
```

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Remove the nesting directory webhook/webhook

A mechanical change to remove the accidental nesting webhook/webhok directory.

@deads2k lgtm'ed the change and approved for self tagging over a slack chat.

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convert testFailedDeployment e2e test to integration test

**What this PR does / why we need it**:
This PR convert a deployment e2e test named "testFailedDeployment" to integration test.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: xref #52113 

**Release note**:

```release-note
NONE
```
/assign

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Remove iptables log on restore failure

Don't log the set of rules at v2 in kube-proxy on error.
The rules are displayed at v5 before the restore is attempted.

In a large cluster the report can generate up to 100000 lines.
A partial report is only helpful if the problem is displayed
in the partial report.



**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
```

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Don't cache exec and mounter in RBD volume plugin

#51608 has broken containerized RBD mount utilities proposed in https://github.com/kubernetes/kubernetes/pull/53440.

Volume plugin can get a different exec and mounter implementation with every call, it must not be cached.

```release-note
NONE
```

/sig storage
/assign @rootfs

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Remove unused pods in genericScheduler

**What this PR does / why we need it**: source code cleanup. less confusion.

**Special notes for your reviewer**:

**Release note**:

```release-note
None
```

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Add openssh-client back into the debian-hyperkube-base image

**What this PR does / why we need it**: adds `openssh-client` back into the `debian-hyperkube-base` image. This was removed in #48365, but is apparently needed by the gitRepo volume plugin.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #54129

**Special notes for your reviewer**:
I haven't yet pushed this image, so builds will fail. If this looks good, I'll push and re-trigger tests.

**Release note**:

```release-note
Add openssh-client back into the hyperkube image. This allows the gitRepo volume plugin to work properly.
```

/assign @luxas @tallclair

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Bump version of prometheus-to-sd to 0.2.2.

Bump version of prometheus-to-sd to improve logging, add pod_name and
pod_namespace flags and remove deprecated flags.

Fixes #54583 

```release-note
NONE
```

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fix incorrect log

**What this PR does / why we need it**:
fix incorrect log in nfs_test.go
**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**:
NONE
**Release note**:
NONE

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remove duplicated code 

**What this PR does / why we need it**:
remove duplicated code

**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**:

handler initiated twice.

```
	cc := &CertificateController{
		kubeClient: kubeClient,
		queue:      workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "certificate"),
		handler:    handler,
	}

      cc.handler = handler 
```
**Release note**:

```release-note
NONE
```

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Generate kubeadm referencedoc and man pages

**What this PR does / why we need it**:
Improve kubeadm reference doc and start generating kubeadm man pages.
With this PR, also kubeadm will start following the same approach used by other tools

**Which issue this PR fixes** 
initial work for [#265](https://github.com/kubernetes/kubeadm/issues/265)

**Special notes for your reviewer**:
This [document](https://docs.google.com/document/d/1w22y-C1YD1mmqqETxrQrCLnJpzwttscanddgvfYceYY/edit?usp=sharing)  contains the design proposal for how to implement this goal, that will be implemented partially in https://github.com/kubernetes/kubernetes (this PR) and partially in https://github.com/kubernetes/website

In order to keep the PR as small and clean possible I didn't generated new placeholders files under `/docs/man` and `/docs/admin` at this stage. If this is necessary, I will do this later in this PR or eventually in another PR; however, if this is not strictly necessary, IMO we should avoid to pollute this repo with placeholders to file that are maintained in another repo.

cc @kubernetes/sig-docs-maintainers @Bradamant3 @heckj

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Implement InstanceExistsByProviderID() for cloud providers

Fix #51406
If cloud providers(like aws, gce etc...) implement ExternalID()
and support getting instance by ProviderID , they also implement
InstanceExistsByProviderID().

/assign wlan0
/assign @luxas

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

Don't log the set of rules at v2 in kube-proxy on error.
The rules are displayed at v5 before the restore is attempted.

In a large cluster the report can generate up to 100000 lines.
A partial report is only helpful if the problem is displayed
in the partial report.

Volume plugin can get a different exec and mounter implementation with every
call, it must not be cached.

Automatic merge from submit-queue (batch tested with PRs 50776, 54395). 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>.

Move fluentd-gcp out of host network

Since metadata proxy doesn't filter service account after all, make fluentd-gcp addon run in its own network

This will mitigate the problem with port collision

```release-note
[fluentd-gcp addon] Fluentd now runs in its own network, not in the host one.
```

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Use the core client with explicit version globally

**What this PR does / why we need it**:
As mentioned in #49535 and #50605, we want to have a global replace to use core client with explicit version.

**Which issue this PR fixes**: fixes #49535 

**Special notes for your reviewer**:
The actual type of clientSet.Core() is already the same with clientSet.CoreV1(), so it should be safe replacement.
The places that clientSet.Core() are still in use are identified by IDE "find usages", and changes are made with one time global replace. Hopefully there will be none left after this PR merged.
Let me know if this PR is too big to review, I can split it into some smaller ones.

/cc @kubernetes/sig-api-machinery-pr-reviews 
/cc @k82cn @sttts 

**Release note**:

```release-note
none
```

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delete the hostport from usedmap

**What this PR does / why we need it**:
delete the hostport record when pod is not on the host

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

Facilitate the further pr https://github.com/kubernetes/kubernetes/pull/52421. Because the code which detects the conflict between wantports and existingports is not quite clean now.
Besides remove the unused port from map will save the memory.

**Special notes for your reviewer**:

I and the original coder @k82cn agreed to make this change

**Release note**:

```release-note
NONE
```

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Updating Calico to v2.6.1

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

Updating Calico to the most recent release v2.6.1.

[Release page](https://docs.projectcalico.org/v2.6/releases/) and [blog post](https://www.projectcalico.org/project-calico-2-6-released/)

**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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change alpha-endpoint-reconciler-type argument to endpoint-reconciler-type

**What this PR does / why we need it**: Tweaks the endpoint reconciler argument to remove 'alpha', because according to this [comment](https://github.com/kubernetes/kubernetes/pull/50984#discussion_r146290402) we are preferring to document the flags.

**Special notes for your reviewer**:

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

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Add file backed state to cpu manager

**What this PR does / why we need it**:
Adds file backed `State` implementation to cpu manger with tests.
Reads from `State` are done from memory, while each write triggers state save to a file.

Any failure in reading the state file results in empty state

Next PR: #54409

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Remove hard code of session affinity timeout in winows kernel proxy

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

Remove hard code of session affinity timeout in winows kernel proxy - we have already done this in userspace, iptables and ipvs proxy.

**Which issue this PR fixes**: 

fixes #53636 

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

/sig network
/area kube-proxy

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Adding unit tests to methods of file's util

What this PR does / why we need it:

Add unit tests, thank you!

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Adding unit tests to methods of netsh

What this PR does / why we need it:

Add unit tests, thank you!

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Better error messages and logging while registering device plugins.

Related to: #51993

/sig scheduling

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