Merge pull request #55812 from deads2k/admission-17-external

Automatic merge from submit-queue (batch tested with PRs 55812, 55752, 55447, 55848, 50984). 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>.

Make versioned types for webhook admission config

Versioned webhook admission config type as promised in https://github.com/kubernetes/kubernetes/pull/54414.  

@kubernetes/sig-api-machinery-pr-reviews 
@ericchiang as promised.  fyi.

```yaml
kind: AdmissionConfiguration
apiVersion: apiserver.k8s.io/v1alpha1
plugins:
- name: GenericAdmissionWebhook
  configuration:
    kind: WebhookAdmission
    apiVersion: apiserver.config.k8s.io/v1alpha1
    kubeConfigFile: /path/to/my/file
```

`ADMISSION_CONTROL_CONFIG_FILE=../foo.yaml hack/local-up-cluster.sh`

plugin/pkg/admission/resourcequota/admission.go

@@ -28,6 +28,7 @@ import (
 	kubeapiserveradmission "k8s.io/kubernetes/pkg/kubeapiserver/admission"
 	"k8s.io/kubernetes/pkg/quota"
 	resourcequotaapi "k8s.io/kubernetes/plugin/pkg/admission/resourcequota/apis/resourcequota"
+	resourcequotaapiv1alpha1 "k8s.io/kubernetes/plugin/pkg/admission/resourcequota/apis/resourcequota/v1alpha1"
 	"k8s.io/kubernetes/plugin/pkg/admission/resourcequota/apis/resourcequota/validation"
 )
 
@@ -48,6 +49,10 @@ func Register(plugins *admission.Plugins) {
 			}
 			return NewResourceQuota(configuration, 5, make(chan struct{}))
 		})
+
+	// add our config types
+	resourcequotaapi.AddToScheme(plugins.ConfigScheme)
+	resourcequotaapiv1alpha1.AddToScheme(plugins.ConfigScheme)
 }
 
 // QuotaAdmission implements an admission controller that can enforce quota constraints