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Fix poll to not fail on first error

Fixes https://github.com/kubernetes/kubernetes/issues/35225
I hope. No repro locally.

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Create restclient interface

Refactoring of code to allow replace *restclient.RESTClient with any RESTClient implementation that implements restclient.RESTClientInterface interface.

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Eliminate half-baked multi-architecture support

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

We have release `kubeadm` with half-baked support for clusters with nodes of different CPU architectures. The problem with the code as it stand is that user will notice pending daemonsets of `kube-proxy` for machines with architectures that they don't have. At the same time, the code as it stand did not pick up correct images for architectures it wanted to allow. Additionally, it only treated `kube-proxy` in such a way, but didn't do anything about `kube-dns`. This removes multiple daemonesets, but ensures that whichever resources we deploy have node affinity set to the architecture native to the master. Users wishing to use mixed architectures can still create extra daemonsets via the API.

**Which issue this PR fixes**: fixes #33916

**Release note**:
```release-note
Remove support for multi-architecture code in `kubeadm`, which was released untested.
```

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CRI: Handle container/sandbox restarts for pod with RestartPolicy == …

If all sandbox and containers are dead in a pod, and the restart policy is
"Never", kubelet should not try to recreate all of them.

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Deny service ClusterIP update from `None`

**What this PR does / why we need it**: Headless service should not be transformed into a service with ClusterIP, therefore update of this field if it's set to `None` is disallowed.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #33029

**Release note**:
```release-note
Changing service ClusterIP from `None` is not allowed anymore.
```

If all sandbox and containers are dead in a pod, and the restart policy is
"Never", kubelet should not try to recreate all of them.

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add generic shared informer backed by existing informer

Adds the ability to get an informer and lister that returns `[]runtime.Object` methods with the "normal" filtering capabilities based on a `GroupResource`. Right now, it only works on known types (and re-uses those caches for efficiency by having a different skin on the `Index`).  It should be extended in the future.

@derekwaynecarr I think this gives you the types you were looking for to avoid the ugly array copies.

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Support resourceVersion in GetToList - unify interface of List and Ge…

This pretty much unifies the interface of List() and GetToList() methods of storage interface.

I'm going to use it in a subsequent PR to improve performance of the whole cluster.

Eliminate half-baked multi-architecture support, but keep node affinity architecture-agnostic (fix #33916)

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vSphere kube-up: Wait for cbr0 configuration to complete before setting up routes.

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**What this PR does / why we need it**:
Fixes routing setup when deploying via kube-up.sh on vSphere.
Remove optimizations for salt status check till flakyness of install with optimization
is addressed.

**Which issue this PR fixes**  
fixes #34248, #31310 

**Special notes for your reviewer**:
Ref PR with a similar fix https://github.com/kubernetes/kubernetes/issues/31672

Added 'mounterPath' to Mounter interface in 'mount_unsupported.go'.

Test cases from ClusterIP using types to other ClusterIP using types
(ClusterIP, NodePort, LoadBalancer) added.

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Return an empty network namespace path for exited infra containers

If the infra container has already terminated, `docker inspect` will report
pid 0. The path constructed using the pid to check the network namespace of
the process will be invalid. This commit changes docker to report an empty
path to stop kubenet from erroring out whenever TearDown is called on an
exited infra container.
    
This is not a fix for all the plugins, as some plugins may require the actual
network namespace to tear down properly.

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Detect whether a cluster exists before deleting it

Now with correct CLUSTER_NAME variable.

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Remove last probe time from replica sets

While experimenting with Deployment conditions I found out that if we are going to use lastProbeTime as we are supposed to be using it then we hotloop between updates (see https://github.com/kubernetes/kubernetes/pull/19343#issuecomment-255096778 for more info)

cc: @smarterclayton @soltysh

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Did not print 'No resources found.' if error.

fixes #35092 .

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Update kubectl in addon-manager to v1.5.0-alpha.1

This updates the kubectl version that is vendored into the addon-manager image

`kubectl apply --prune` is currently only implemented in v1.5.0-alpha.1 https://github.com/kubernetes/kubernetes/commit/ea5ecc414510320ac07437702f314bda012f55f6

The kube-addon-manager script will fail on kubectl versions that don't have this flag
https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/addon-manager/kube-addons.sh#L154

If the service is of the type using the ClusterIP (ClusterIP, NodePort,
LoadBalancer), the update of ClusterIP is prohibited.

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Generify kube-proxy conntracker setmax() and refactor util/sysctl

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

Fix Kube-proxy `conntrack.go` **TODO** [here](https://github.com/kubernetes/kubernetes/blob/master/cmd/kube-proxy/app/conntrack.go#L56). This PR consists of two parts:

* Generify kube-proxy `realConntracker.SetMax(int)` 

That is, change

`ioutil.WriteFile("/sys/module/nf_conntrack/parameters/hashsize", []byte(strconv.Itoa(max/4)), 0640)` 

to

`sysctl.New().WriteValue("/sys/module/nf_conntrack/parameters/hashsize", max/4)`

* Refactor `sysctl.SetSysctl()` and `sysctl.GetSysctl()` to `WriteValue(path string, value string) error` and `GetValue(path value) (error, string)`

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Add an informer for StorageClass

Add an informer for `StorageClass` for later consumption in quota.

/cc @eparis @deads2k @erinboyd

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HA master: fixed removal of master replica w/o suffix (GCE).

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use LC_ALL=C on all sort commands

Most of these don't matter, but this makes it predicable no matter who runs the commands.

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Optimize label selector

The number of values for a given label is generally pretty small (in huge majority of cases it is exactly one value).
Currently computing selectors is up to 50% of CPU usage in both apiserver and scheduler.

Changing the structure in which those values are stored from map to slice improves the performance of typical usecase for computing selectors.

Early results:
- scheduler throughput it ~15% higher
- apiserver cpu-usage is also lower (seems to be also ~10-15%)

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kubeadm: Normalized reset command to match init and join commands.

**What this PR does / why we need it**: Overall, improves code structure. Opening single PR in order avoid big PRs in the future, when adding tests and new functionality, i.e. #34404.

```release-note
NONE
```

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Add streaming methods to CRI API

Copied verbatim from the proposal in the [design doc](https://docs.google.com/document/d/1OE_QoInPlVCK9rMAx9aybRmgFiVjHpJCHI9LrfdNM_s/edit#heading=h.akcz9mrsrc0x).

Note: this will conflict with https://github.com/kubernetes/kubernetes/pull/33988, but the fix ("not implemented") is simple so we can see which gets approved first.

For https://github.com/kubernetes/kubernetes/pull/33988/files

/cc @Random-Liu @kubernetes/sig-node

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Updating the GCI image to gci-dev-55-8872-18-0.

@jessfraz @fabioy @wonderfly @vishh

```release-note
Update the GCI image to gci-dev-55-8872-18-0
```

- fixes #34248, #31310
- Remove optimizations for salt status check till flakyness of install is addressed
- fix indentation

If the infra container has already terminated, `docker inspect` will report
pid 0. The path constructed using the pid to check the network namespace of
the process will be invalid. This commit changes docker to report an empty
path to stop kubenet from erroring out whenever TearDown is called on an
exited infra container.

This is not a fix for all the plugins, as some plugins may require the actual
network namespace to tear down properly.

Automatic merge from submit-queue

Add `--mounter-path` flag to kubelet that will allow overriding the `mount` command used by kubelet

In order to be able to use new mounter library, this PR adds the
mounterPath flag to kubelet which passes the flag to the mount
interface. If flag is empty, mount uses default mount path.

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Delete some old, dead release code