Automatic merge from submit-queue (batch tested with PRs 47327, 48194)

Checked container spec when killing container.

**What this PR does / why we need it**:
Checked container spec when getting container, return error if failed.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #48173 

**Release note**:
```release-note-none
```

Automatic merge from submit-queue (batch tested with PRs 47327, 48194)

Remove useless error

While doing https://github.com/kubernetes/kubernetes/pull/44898, found an useless return error.

**Release note**:
```
None
```

Automatic merge from submit-queue

fix style of yaml and text

**What this PR does / why we need it**:
The original format is very odd. So I try to fix 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
NONE
```

Automatic merge from submit-queue (batch tested with PRs 47700, 48464, 48502)

Add a refreshing discovery client

Introduce a discovery client (implementing `CachedDiscoveryInterface`) which caches discovery information in memory and which can be actively refreshed by the user.

This implementation fetches from discovery upon refresh and could later be improved to maintain updates from a watch.

Extracted from https://github.com/kubernetes/kubernetes/pull/47665 and https://github.com/kubernetes/kubernetes/pull/46000 to help reduce the scope of https://github.com/kubernetes/kubernetes/pull/48065.

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 47700, 48464, 48502)

fix error type

**What this PR does / why we need it**:
invalidToken should be errInvalideToken
**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**:
No
**Release note**:
```
None
```

Automatic merge from submit-queue (batch tested with PRs 47700, 48464, 48502)

Provide a way to setup the limit NO files for rkt Pods

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

This PR allows to customize the Systemd unit files for rkt pods.
We start with the `systemd-unit-option.rkt.kubernetes.io/LimitNOFILE` to allows to run workloads like etcd, ES in kubernetes with rkt.

**Special notes for your reviewer**:

Once again, I followed @yifan-gu guidelines.
I made a basic check over the values given inside the `systemd-unit-option.rkt.kubernetes.io/LimitNOFILE` (integer and > 0).
If this check fails: I simply ignore the field.
The other implementation would be to fail the whole SetUpPod.

We discussed using a key like `rkt.kubernetes.io/systemd-unit-option/LimitNOFILE` but the validation only allows a single `/` in this field:
```The Deployment "tiller" is invalid: spec.template.annotations: Invalid value: "rkt.kubernetes.io/systemd-unit-option/LimitNOFILE": a qualified name must consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyName',  or 'my.name',  or '123-abc', regex used for validation is '([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]') with an optional DNS subdomain prefix and '/' (e.g. 'example.com/MyName')```

**Release note**:

```release-note 
NONE
```

Automatic merge from submit-queue (batch tested with PRs 45467, 48091, 48033, 48498)

bulk delete of tpr packages

related to https://github.com/kubernetes/kubernetes/issues/48152

Bulk delete of the TPR code.  I made the minimal changes outside the delete to try to keep it easy to review.

Automatic merge from submit-queue (batch tested with PRs 45467, 48091, 48033, 48498)

Refactor and simplify generic printer for unknown objects

The first two commits are part of other PRs

@kubernetes/sig-cli-pr-reviews part of the general refactoring for server side print

Automatic merge from submit-queue (batch tested with PRs 45467, 48091, 48033, 48498)

Allow Kubenet with ipv6

When running kubenet with IPv6, there is a panic as there
is IPv4 specific code the Event function.
With this change, Event will support IPv4 and IPv6



**What this PR does / why we need it**:
This PR allows kubenet to use IPv6. Currently there is a panic in kubenet_linux.go
as there is IPv4 specific code.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #48089

**Special notes for your reviewer**:

**Release note**:

```release-note-NONE
```

Automatic merge from submit-queue

Fix kubectl describe for pods with controllerRef

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

kubectl describe doesn't take controllerRef into consideration, resulting confusing result. e.g. if we have two replicaset with the same selector, one with 1 replica and the other 2 replicase, then both replicaset will show 3 running pods.

```sh
$ kubectl describe rs replicaset-2
Name:           replicaset-2      
Namespace:      default
Selector:       environment=prod
Labels:         environment=prod
Annotations:    <none>
Replicas:       2 current / 2 desired
Pods Status:    3 Running / 0 Waiting / 0 Succeeded / 0 Failed
Pod Template:
  Labels:       environment=prod
  Containers:
   created-from-replicaset:
    Image:              nginx
    Port:               
    Environment:        <none>
    Mounts:             <none>
  Volumes:              <none>
Events:
  FirstSeen     LastSeen        Count   From                    SubObjectPath   Type            Reason                  Message
  ---------     --------        -----   ----                    -------------   --------        ------                  -------
  5m            5m              1       replicaset-controller                   Normal          SuccessfulCreate        Created pod: replicaset-2-39szb
  5m            5m              1       replicaset-controller                   Normal          SuccessfulCreate        Created pod: replicaset-2-470jr
```


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

xref #24946

**Special notes for your reviewer**:

**Release note**:

```release-note
Fix kubectl describe for pods with controllerRef 
```

Automatic merge from submit-queue

Add local volume bug to known issues

**What this PR does / why we need it**:
Update known issues with local volume issue #48331

Automatic merge from submit-queue (batch tested with PRs 48399, 48450, 48144)

Skip errors when unregistering juju kubernetes-workers

**What this PR does / why we need it**: When removing a kubernetes node from using Juju and for some reason kubernetes master fails we should not error the node, instead we should proceed with the removal of the node and the master will recognise that node as unavailable because it will fail heartbeats.

**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/juju-solutions/bundle-canonical-kubernetes/issues/300

**Special notes for your reviewer**:

**Release note**:

```
Clean decommission of Juju kubernetes worker units 
```

Automatic merge from submit-queue (batch tested with PRs 48399, 48450, 48144)

configure kube-proxy to run with unset conntrack param when in lxc

**What this PR does / why we need it**: Configures the Juju Charm code to run kube-proxy with `conntrack-max-per-core` set to `0` when in an lxc as a workaround for issues when mounting `/sys/module/nf_conntrack/parameters/hashsize`

**Release note**:

```release-note
Configures the Juju Charm code to run kube-proxy with conntrack-max-per-core set to 0 when in an lxc as a workaround for issues when mounting /sys/module/nf_conntrack/parameters/hashsize
```

Automatic merge from submit-queue (batch tested with PRs 48399, 48450, 48144)

Group and order imported packages.

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

**Release note**:

```release-note-none
```

Automatic merge from submit-queue (batch tested with PRs 47162, 48444, 48445)

make the panic handler first

Move the panic handler to the beginning of the chain so that panics will get information in the log beyond a stack.

Automatic merge from submit-queue (batch tested with PRs 47162, 48444, 48445)

Introducing a cluster-scoped resource in the wardle.k8s.io group.

**What this PR does / why we need it**:
This PR adds a cluster-scoped resource to the wardle.k8s.io group.
The cluster scoped resource has a field that indicates Flunder.Names that are disallowed.
The resource is going to be used by an admission plugin.
The admission plugin will list the cluster-scope resources and check against banned names.

**Special notes for your reviewer**:
Issue: #47868

**Release note**:

```
NONE
```

Automatic merge from submit-queue (batch tested with PRs 47162, 48444, 48445)

Fix output extra comma

/# kubectl get service
NAME                     CLUSTER-IP       EXTERNAL-IP               PORT(S)          AGE
nginx-service-test       10.200.6.109     _**,80.11.12.10**_              8000:31637/TCP   6s
**(output a extra comma)**
except: 
nginx-service-test       10.200.6.109     _**80.11.12.10**_              8000:31637/TCP   6s

/# cat lb.yaml 
apiVersion: v1 
kind: Service 
metadata: 
  name: nginx-service-lb3
spec: 
  ports: 
    - port: 8000
      targetPort: 80 
      protocol: TCP 
  type: LoadBalancer
  selector: 
    name: nginx
  externalIPs: 
    - 80.11.12.10
    - 1.2.3.6
/# kubectl create -f lb.yaml

Automatic merge from submit-queue (batch tested with PRs 48480, 48353)

remove tpr api access

xref https://github.com/kubernetes/kubernetes/issues/48152

TPR tentacles go pretty deep. This gets us started by removing API access and we'll move down from there.

@kubernetes/sig-api-machinery-misc 
@ironcladlou this should free up the GC implementation since TPRs will no longer be present and failing.

```release-note
Removing TPR api access per https://github.com/kubernetes/kubernetes/issues/48152
```

Automatic merge from submit-queue (batch tested with PRs 48480, 48353)

Ensure namespace exists as part of RBAC reconciliation

reconciliation can race with the controller that creates the namespaces containing the bootstrap roles. if it loses, it gets a NotFound error trying to create the namespaced role/rolebinding.

Fixes https://github.com/kubernetes/kubeadm/issues/335

```release-note
RBAC role and role-binding reconciliation now ensures namespaces exist when reconciling on startup.
```

Automatic merge from submit-queue

[trivial]fix function name in comment

**Release note**:

```
NONE
```

Automatic merge from submit-queue

Fix format of CHANGELOG

**What this PR does / why we need it**:
Fix format of CHANGELOG


**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 48473, 48341)

remove redundant alias

**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 #
remove redundant alias

**Special notes for your reviewer**:

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

Automatic merge from submit-queue (batch tested with PRs 48473, 48341)

Refactor podListEqual()

**What this PR does / why we need it**:
To solve the problem:
 this is not correct if there are duplicate pods in the list.
 for example: podListEqual([a, a, b], [a, b, b]) will return true

**Special notes for your reviewer**:
 the original method is O(N^2), while current method is 3* O(N).
I think it is much better.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 48383, 47384)

Fix 401/403 apiserver errors do not return 'Status' objects

fixes https://github.com/kubernetes/kubernetes/issues/45970

Automatic merge from submit-queue

Factored out simulate from nodeShouldRunDaemonPod.

Addressed comments from https://github.com/kubernetes/kubernetes/pull/48189#issuecomment-312223162



**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
none
```

/sig apps

Automatic merge from submit-queue

Pods which exit and won't restart should not be in the Endpoints.NotReadyAddresses

**What this PR does / why we need it**:
Such pods should not be in the Endpoints.NotReadyAddresses:
* Failed pods with restart policy=Never
* Succeeded pods with restart policy=Never
* Succeeded pods with restart policy=OnFailure

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #46776

**Special notes for your reviewer**:
/cc @wojtek-t 

**Release note**:

```release-note
NONE
```

Refactors and removes the need for the more complex old code,
temporarily limits what output is shown for truly unknown objects (a
follow up change will allow server side handling and generic fallback),
and removes all of the generic printers in favor of a single code path.

Addressed comments from https://github.com/kubernetes/kubernetes/pull/48189#issuecomment-312223162

Automatic merge from submit-queue

Use the azure certificate password when decoding the certificate

**What this PR does / why we need it**:
Use the correct password when decoding the azure client certificate.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #47286

cc @colemickens

Automatic merge from submit-queue

 modify the meassage in kubectl secret command when the envFile path is not an file path

What this PR does / why we need it:
We found that the error message of kubectl secret command when the the envFile path is not an file path
is inaccurate and the style is different with which in  kubectl configmap command. We modified “must be a file” to "env secret file cannot be a directory" 
Special notes for your reviewer:
None

Automatic merge from submit-queue

Add ability to enable patch conversion detector

Will rebase and fix once #41326 is merged.