Merge pull request #41165 from nikhiljindal/del202

Automatic merge from submit-queue (batch tested with PRs 41954, 40528, 41875, 41165, 41877)

Updating apiserver to return 202 when resource is being deleted asynchronously via cascading deletion

As per https://github.com/kubernetes/kubernetes/issues/33196#issuecomment-278440622.

cc @kubernetes/sig-api-machinery-pr-reviews @smarterclayton @caesarxuchao @bgrant0607 @kubernetes/api-reviewers 

```release-note
Updating apiserver to return http status code 202 for a delete request when the resource is not immediately deleted because of user requesting cascading deletion using DeleteOptions.OrphanDependents=false.
```

pkg/registry/rbac/clusterrole/registry.go

@@ -79,7 +79,7 @@ func (s *storage) GetClusterRole(ctx genericapirequest.Context, name string, opt
 }
 
 func (s *storage) DeleteClusterRole(ctx genericapirequest.Context, name string) error {
-	_, err := s.Delete(ctx, name, nil)
+	_, _, err := s.Delete(ctx, name, nil)
 	return err
 }
 

pkg/registry/rbac/clusterrolebinding/registry.go

@@ -79,7 +79,7 @@ func (s *storage) GetClusterRoleBinding(ctx genericapirequest.Context, name stri
 }
 
 func (s *storage) DeleteClusterRoleBinding(ctx genericapirequest.Context, name string) error {
-	_, err := s.Delete(ctx, name, nil)
+	_, _, err := s.Delete(ctx, name, nil)
 	return err
 }
 

pkg/registry/rbac/role/registry.go

@@ -79,7 +79,7 @@ func (s *storage) GetRole(ctx genericapirequest.Context, name string, options *m
 }
 
 func (s *storage) DeleteRole(ctx genericapirequest.Context, name string) error {
-	_, err := s.Delete(ctx, name, nil)
+	_, _, err := s.Delete(ctx, name, nil)
 	return err
 }
 

pkg/registry/rbac/rolebinding/registry.go

@@ -80,7 +80,7 @@ func (s *storage) GetRoleBinding(ctx genericapirequest.Context, name string, opt
 }
 
 func (s *storage) DeleteRoleBinding(ctx genericapirequest.Context, name string) error {
-	_, err := s.Delete(ctx, name, nil)
+	_, _, err := s.Delete(ctx, name, nil)
 	return err
 }