Merge pull request #64326 from andrewsykim/default-disable-pvl

Automatic merge from submit-queue. 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>.

disable PersistentVolumeLabel admission controller by default

**What this PR does / why we need it**:
Disables PersisntVolumeLabel admission controller by default. This was set for [deprecation since 1.8](https://github.com/kubernetes/kubernetes/pull/52618) so we can now disable it by default. PersisntVolumeLabel admission controller can still be explicitly enabled and can also run on external cloud controller manageres. 

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

https://github.com/kubernetes/kubernetes/issues/52617

**Special notes for your reviewer**:

**Release note**:

```release-note
(ACTION REQUIRED) PersisntVolumeLabel admission controller is now disabled by default. If you depend on this feature (AWS/GCE) then ensure it is added to the `--enable-admission-plugins` flag on the kube-apiserver.
```

pkg/kubeapiserver/options/plugins.go

@@ -131,7 +131,6 @@ func DefaultOffAdmissionPlugins() sets.String {
 		lifecycle.PluginName,                //NamespaceLifecycle
 		limitranger.PluginName,              //LimitRanger
 		serviceaccount.PluginName,           //ServiceAccount
-		label.PluginName,                    //PersistentVolumeLabel
 		setdefault.PluginName,               //DefaultStorageClass
 		resize.PluginName,                   //PersistentVolumeClaimResize
 		defaulttolerationseconds.PluginName, //DefaultTolerationSeconds