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Using ipset doing SNAT and packet filter in IPVS kube-proxy

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

Try ipset in ipvs proxy mode.

**Which issue this PR fixes**: 

fixes #54203

xref: #53393, #53775

**Special notes for your reviewer**:

**Release note**:

```release-note
Using ipset doing SNAT and packet filtering in IPVS kube-proxy
```

/sig network

/area kube-proxy

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NetworkPolicy e2e: named port egress test

**What this PR does / why we need it**:
Add an e2e NetworkPolicy test that ensures that an egress rule that specifies a named port properly applies to egress traffic.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #52040

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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Add a new scheduling queue based on priority queue.

**What this PR does / why we need it**:
This PR is a part of solution to fix potential starvation of pods in pod preemption. It adds a different scheduling queue to the scheduler that allows highest priority pods to be scheduled before other pods.

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

**Special notes for your reviewer**:
I tried enabling this queue and made sure that our existing tests pass with this queue enabled.

**Release note**:

```release-note
Add a new scheduling queue that helps schedule the highest priority pending pod first.
```

/sig scheduling

ref/ #54501
ref/ #47604

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fix bad return error text

**What this PR does / why we need it**:
fix bad return error text

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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Improve documentation for kubeadm phases

**What this PR does / why we need it**:
This PR is part of the effort for improving kubeadm reference doc (CLI, website, manpages), and more specifically improves documentation for:
- kubeadm alpha phase certs
- kubeadm alpha phase kubeconfig
- kubeadm alpha phase controlplane
- kubeadm alpha phase etcd
- kubeadm alpha phase uploadconfig
- kubeadm alpha phase addons
- kubeadm alpha phase selfhosting

**Which issue(s) this PR fixes**:
part of the effort for [#265](https://github.com/kubernetes/kubeadm/issues/265)

**Special notes for your reviewer**:

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

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Re-engineer the kubeadm join logic.

**What this PR does / why we need it**:
- wait for the kubelet to create `/etc/kubernetes/kubelet.conf`
- use those credentials to PATCH the node

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref: https://github.com/kubernetes/kubeadm/issues/28#issuecomment-345502933

**Special notes for your reviewer**:
/cc @kubernetes/sig-cluster-lifecycle-pr-reviews

**Release note**:

```release-note
NONE
```

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kubeadm: Fix a small bug in the self-hosting code

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

`apps/v1beta2` requires that `DaemonSet.spec.selector.matchLabels` equals `DaemonSet.spec.template.metadata.labels`. Without this change, the API server rejects the DaemonSet in the validation stage.

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

**Special notes for your reviewer**:

**Release note**:

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

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Adding etcd upgrade option to kubeadm upgrade apply 

This PR adds etcd upgrade functionality to kubeadm upgrade apply.
First commit adds certain functions to be able to deal with a single component of control plane and not just with all three components (apiserver, controller-manager and scheduler). It adds granularity as a result code can be reused. 

Closes: https://github.com/kubernetes/kubeadm/issues/490

```release-note
Adds to **kubeadm upgrade apply**, a new **--etcd-upgrade** keyword. When this keyword is specified, etcd's static pod gets upgraded to the etcd version officially recommended for a target kubernetes release.
```

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Refactoring of priority function(CaculateSpreadPriority) by using map/reduce pattern

**What this PR does / why we need it**:
Ref #24246. exactly ref https://github.com/kubernetes/kubernetes/issues/51455, the PR aim to unify priority functions(deprecated) by using map/reduce pattern.
This is the first step, my todo list(WIP):
- interpod-affnity priority funciton refactoring 
- the priority funcitons register pattern
- deprecated priority function definition and all related logic. etc.

**Which issue this PR fixes**:

no issue, just unify the priority functions pattern.

**Special notes for your reviewer**:
none
**Release note**:
none

Automatic merge from submit-queue (batch tested with PRs 56008, 56013). 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>.

KubeletConfiguration.BaseConfig.ClusterDNS defaults to the tenth address of MasterConfiguration.Networking.ServiceSubnet

**What this PR does / why we need it**:
If can get DNS IP from MasterConfiguration.Networking.ServiceSubnet, defaults to it. Otherwise defaults to DefaultClusterDNSIP

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref: https://github.com/kubernetes/kubeadm/issues/28#issuecomment-345502933

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

**Release note**:

```release-note
NONE
```

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Fix panic when assigning configmap UID of kubelet configuration.

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

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes https://github.com/kubernetes/kubeadm/issues/553

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

**Release note**:

```release-note
NONE
```

KubeletConfiguration.BaseConfig.ClusterDNS defaults to the tenth address of MasterConfiguration.Networking.ServiceSubnet

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Adding vishh as an reviewer/approver for hack directory

This is to help drive device plugin integration and also share review burden.

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add test for slice
Signed-off-by: yanxuean <yan.xuean@zte.com.cn>

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

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

**Special notes for your reviewer**:

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

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Add IPv6 and negative UT test cases for proxier's deleteEndpointConnections

This change adds IPv6 and negative UT test cases for the proxier's deleteEndpointConnections.

Changes include:
- Add IPv6 UT test cases to TestDeleteEndpointConnections.
- Add negative UT test case to TestDeleteEndpointConnections for
  handling case where no connections need clearing (benign error).
- Add negative UT test case to test unexpected error.
- Reorganize UT in TestDeleteEndpointConnections so that the fake
  command executor's command and scripted responses are generated on
  the fly based on the test case table (rather than using a fixed
  set of commands/responses that will need to be updated every time
  test cases are added/deleted).
- Create the proxier service map in real time, based on the test case
  table (rather than using a fixed service map that will need to be updated
  every time test cases are added/deleted).

fixes #53554



**What this PR does / why we need it**:
This change adds IPv6 and negative UT test cases for the proxier's
deleteEndpointConnections.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #53554

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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Rename generic webhook

Ref #https://github.com/kubernetes/features/issues/492

A pure gred & sed change. The `GenericAdmissionWebhook` is renamed as `ValidatingAdmissionWebhook`.

```release-note
The `GenericAdmissionWebhook` is renamed as `ValidatingAdmissionWebhook`. Please update you apiserver configuration file to use the new name to pass to the apiserver's `--admission-control` flag.
```

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Refactor iSCSI PV spec to use SecretReference 

**What this PR does / why we need it**:
Use SecretReference in iSCSI PV spec
**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/321

**Special notes for your reviewer**:
@liggitt 
**Release note**:

```release-note
iSCSI Persistent Volume Sources can now reference CHAP Secrets in namespaces other than the namespace of the bound Persistent Volume Claim
```

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Allow resource.Builder to modify requests per client

Gives the builder a hook point to add settings to each request. These
settings are applied before the request is created and so are unable to
view the request. Intended to set controls on a per request basis.

Prereq for server-side `kubectl get`

@enj as requested @kubernetes/sig-cli-api-reviews

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Fixes Issue 55816: Removes unneeded IPPart error

**What this PR does / why we need it**:
Previously proxy was incorrectly logging an error message for the IPPart function. The PR fixes this logging behavior to only log `invalid IP part` for invalid IP:Port combinations.

**Which issue(s) this PR fixes**:
Fixes # https://github.com/kubernetes/kubernetes/issues/55816

**Special notes for your reviewer**:
None

**Release note**:
```
none
```

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Clarify ExternalNames are hostnames

Updates the documentation for ExternalName to clarify
that they adhere RFC-1123 hostname and are not DNS names.

Fixes #52266

**Release note**:

```release-note

```

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remove AddToGroupVersion in kubeproxy scheme

ref https://github.com/kubernetes/kubernetes/pull/53645#discussion_r148850279Signed-off-by: yanxuean <yan.xuean@zte.com.cn>

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

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
/assign @ncdc

List of changes:
- Refactoring staticpod and waiter functions

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Validate usage strings when creating bootstrap tokens via kubeadm

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

fix TODO: Validate usages here so we don't allow something unsupported

**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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Set -w flag on all iptables calls during master startup

Lack of this flag sometimes causes iptables to return error code 4 (if
other process holds xtables lock). As a result, because of  `set -o errexit`,
whole startup script fails, leaving master in an incorrect state.

This is another occurence of (already closed) https://github.com/kubernetes/kubernetes/issues/7370

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

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

**Special notes for your reviewer**:

**Release note**:

```release-note
Bugfix: master startup script on GCP no longer fails randomly due to concurrent iptables invocations.
```

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conversion-gen: check for nil pkg in getManualConversionFunctions

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

Following https://github.com/kubernetes/kubernetes/pull/54394, this PR performs a check in getManualConversionFunctions for packages that are not found and prints a warning instead of panicking.

This should improve the UX of conversion-gen, and is also a narrower change than that proposed in #54394, so hopefully can be cherry picked into the release-1.8 etc. branches.

This would allow users to use conversion-gen via the generate-internal-groups.sh script without having to make a second call that 'blanks out' `--extra-peer-dirs`.

/cc @sttts

```release-note
NONE
```

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CPU Manager: file state for all policies

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

Before this change, the new file-backed state was only enabled for the static CPU manager policy. This patch enables persistent state for all policies.

This PR fixes #55736 and the potential CPU resource leak described in that issue.

**Release note**:

```release-note
NONE
```

/kind bug
/sig node
/assign @balajismaniam

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Improve kubelet cgroup

**What this PR does / why we need it**:
1.Use arg cgroupRoot,not nodeConfig.CgroupRoot
    Using both arg cgroupRoot and nodeConfig.CgroupRoot is confused in function NewQOSContainerManager
2.improve cgroupmanager in qosContainerManager
3. improve arg "cgroupRoot" type in NewQOSContainerManager

**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
```