Merge pull request #63100 from ravisantoshgudimetla/priority-beta-api

Automatic merge from submit-queue (batch tested with PRs 55511, 63372, 63400, 63100, 63769). 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>.

Create pkg/scheduling/apis/v1beta1 and move priorityClass to beta 

**What this PR does / why we need it**:
This is for creating pkg/apis/scheduling/v1beta1 so that priorityClasses could be moved to beta.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Part of #57471

**Special notes for your reviewer**:
/cc @bsalamat @aveshagarwal 

**Release note**:

```release-note
The `PriorityClass` API is promoted to `scheduling.k8s.io/v1beta1`
```

test/integration/etcd/etcd_storage_path_test.go

@@ -424,6 +424,14 @@ var etcdStorageData = map[schema.GroupVersionResource]struct {
 	gvr("scheduling.k8s.io", "v1alpha1", "priorityclasses"): {
 		stub:             `{"metadata":{"name":"pc1"},"Value":1000}`,
 		expectedEtcdPath: "/registry/priorityclasses/pc1",
+		expectedGVK:      gvkP("scheduling.k8s.io", "v1beta1", "PriorityClass"),
+	},
+	// --
+
+	// k8s.io/kubernetes/pkg/apis/scheduling/v1beta1
+	gvr("scheduling.k8s.io", "v1beta1", "priorityclasses"): {
+		stub:             `{"metadata":{"name":"pc2"},"Value":1000}`,
+		expectedEtcdPath: "/registry/priorityclasses/pc2",
 	},
 	// --
 }