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E2E & Node E2E: Move pods test into common directory

This is the 4th part of #29494.

For #29081.
Based on #29092, #29806.

The first commit is squash of all dependent commits. Please only review the last 2 commits.

The 2nd commit migrates pods.go to `common/pods.go`.
Notice that the test `should be schedule with cpu and memory limits` is removed because:
* It doesn't make sense at the node level.
* It should have been tested in scheduler_predicates at the cluster level https://github.com/kubernetes/kubernetes/blob/master/test/e2e/scheduler_predicates.go#L264

The 3rd commit splits pods.go into several pods (nothing is changed, only move code):
* **Liveness probe test:** Moved into `container_probe.go`.
* **Init container test:** Moved into a new file `init_container.go`.
* **Others:** Still in pods.go

@vishh @timstclair

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[GarbageCollector] only store typeMeta and objectMeta in the gc store

GC only needs to know the apiVersion, kind, and objectMeta of an object. This PR makes the stores of GC only save these fields.
cc @kubernetes/sig-api-machinery

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Deployment status validity should be checked in scaled rollout e2e test

Follow up #29889 

@kubernetes/deployment

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Update scale cmd help to display duration "units" in --timeout usage

release-note-none

`kubectl scale` has `--timeout` option, but the help info does not give accepted time units.

The help info gives default value 0 without a unit, potentially misleading a user into thinking they need to pass the numbered time only.

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Add service and deployment create sub-commands to kubectl

```release-note
Added new commands kubectl create service & kubectl create deployment
```
Partial #25382

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Add update_job_result_cache() to uploader for storing last 200 results in a single file.

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Add SET_NOMOCK_FLAG handling.

Pass thru KUBE_GCS_RELEASE_BUCKET (for federation yamls that change it).

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Allow expressing inodes in percentages for eviction

Per discussion here:
https://github.com/kubernetes/kubernetes/pull/28055#issuecomment-230078770

The amount of inodes per disk can vary, and our operators would prefer to express eviction in terms of percentage available.  So independent of a disk having 3.2M or 12M of total inodes, its more convenient to just express eviction as saying if available inodes falls below 10 or 5 percent of total capacity then trigger an action.

/cc @vishh @ronnielai @kubernetes/rh-cluster-infra @twiest @kubernetes/sig-node 

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Add integration test for volume controller startup.

Tests #28002 with real etcd (unit tests have a fake one with different behavior).

@kubernetes/sig-storage 

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Add total inodes to kubelet summary api

Needed to support inode based eviction thresholds as a percentage.

/cc @ronnielai @vishh @kubernetes/rh-cluster-infra 

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Return nil directly when err is nil.

When err is nil, return nil directly instead of `err` to avoid confusion.

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Repalce rawContainerID with containerID

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Edits to bring the tls-terminated etcd cluster to the layer.

fixes #23198
```release-note
* Updates required for juju kubernetes to use the tls-terminated etcd charm.
```

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Federation common libs - deliverAfer for delaying deliverer

cc: @wojtek-t @kubernetes/sig-cluster-federation 

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Admission control errors should have consistent lower casing

noticed while reviewing other PRs, but convention is that error messages should start with lower-case.

fixed up inconsistencies in admission control plug-ins.

/cc @ncdc 

Merge pull request #30223 from intelsdi-x/use_GetMasterAndWorkerNodesOrDie_in_scheduler_predicates_tests

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Use GetMasterAndWorkerNodesOrDie in scheduler predicates tests

fixes #28857
follow up to https://github.com/kubernetes/kubernetes/pull/28970

Makes sure that unschedulable node won't be count as worker node.
Its using [GetMasterAndWorkerNodesOrDie](https://github.com/kubernetes/kubernetes/blob/master/test/e2e/framework/util.go#L4743) method which is used also in [density tests](https://github.com/kubernetes/kubernetes/blob/master/test/e2e/density.go#L389).

@gmarek PTAL

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pkg/util/exec: don't specify paths for echo

`ex.Command()` already searches the binary in PATH, no need to manually
specify it as `/bin/echo`. `pkg/util/exec` tests fail in non-conventional environments
due to this (e.g. NixOS).

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Small update to the kubemark guide

Fix #29882

cc @wojtek-t 

`ex.Command()` already searches the binary in PATH, no need to manually
specify it. `pkg/util/exec` tests fail in non-conventional environments
due to this (e.g. NixOS).

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Install authorization group in 1.4 client

By the way, buried in my other PR there is an e2e test which will remind people adding this line.

@deads2k 

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Fix PVC.Status.Capacity and AccessModes after binding

Also, fix unit tests to have the same claim and volume sizes in most of the
tests where we don't test matching based on size and test for a specific size
when we do actually test the matching.

Fixes #29425

Also, fix unit tests to have the same claim and volume sizes in most of the
tests where we don't test matching based on size and test for a specific size
when we do actually test the matching.

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Using the correct phrase as the keyword in the test has changed

Fixes #30202

This adds:
 create service clusterip
 create service nodeport
 create service loadbalancer

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allow a read-only rbd image mounted by multiple pods

allow pod to run read-only rbd volume 
fix #27725

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remove useless value copy

Copy something to values in parameters won't change them in go. So, remove it to avoid making people confused.

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Update secrets.md

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add delete strategy to certificates registry

So that CSRs can be deleted.

cc @gtank 

```console
$ kubectl delete certificatesigningrequest foo
error: error when deleting "foo": http: server closed connection
```
and on the apiserver:
```
E0806 00:11:53.791039       5 runtime.go:64] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/runtime/runtime.go:70
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/runtime/runtime.go:63
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/runtime/runtime.go:49
/usr/local/go/src/runtime/asm_amd64.s:472
/usr/local/go/src/runtime/panic.go:443
/usr/local/go/src/runtime/panic.go:62
/usr/local/go/src/runtime/sigpanic_unix.go:24
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/api/rest/create.go:115
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/api/rest/delete.go:50
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/registry/generic/registry/store.go:634
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/apiserver/resthandler.go:799
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/apiserver/resthandler.go:953
/usr/local/go/src/runtime/asm_amd64.s:1998
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x20 pc=0xa268ee]

goroutine 1161 [running]:
panic(0x2a00240, 0xc820014070)
        /usr/local/go/src/runtime/panic.go:481 +0x3e6
k8s.io/kubernetes/pkg/util/runtime.HandleCrash(0xc821ecbef8, 0x1, 0x1)
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/runtime/runtime.go:56 +0x153
panic(0x2a00240, 0xc820014070)
        /usr/local/go/src/runtime/panic.go:443 +0x4e9
k8s.io/kubernetes/pkg/api/rest.objectMetaAndKind(0x0, 0x0, 0x7faf1332ee78, 0xc8220f0600, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/api/rest/create.go:115 +0x1ee
k8s.io/kubernetes/pkg/api/rest.BeforeDelete(0x0, 0x0, 0x7faf13188338, 0xc821e218f0, 0x7faf1332ee78, 0xc8220f0600, 0xc821eb11c0, 0x0, 0x0, 0x0)
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/api/rest/delete.go:50 +0x94
k8s.io/kubernetes/pkg/registry/generic/registry.(*Store).Delete(0xc82013c9a0, 0x7faf13188338, 0xc821e218f0, 0xc821e0bdde, 0xa, 0xc821eb11c0, 0x0, 0x0, 0x0, 0x0)
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/registry/generic/registry/store.go:634 +0x3b8
k8s.io/kubernetes/pkg/apiserver.DeleteResource.func1.1(0x0, 0x0, 0x0, 0x0)
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/apiserver/resthandler.go:799 +0xa4
k8s.io/kubernetes/pkg/apiserver.finishRequest.func1(0xc821e081e0, 0xc821eb12c0, 0xc821e08000, 0xc821e0bf80)
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/apiserver/resthandler.go:953 +0xd9
created by k8s.io/kubernetes/pkg/apiserver.finishRequest
        /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/apiserver/resthandler.go:958 +0xf1
```