Merge pull request #41306 from gnufied/implement-interface-bulk-volume-poll

Automatic merge from submit-queue (batch tested with PRs 41306, 42187, 41666, 42275, 42266)

Implement bulk polling of volumes

This implements Bulk volume polling using ideas presented by
justin in https://github.com/kubernetes/kubernetes/pull/39564

But it changes the implementation to use an interface
and doesn't affect other implementations.

cc @justinsb

pkg/controller/volume/persistentvolume/framework_test.go

@@ -1118,6 +1118,10 @@ func (plugin *mockVolumePlugin) SupportsMountOption() bool {
 	return false
 }
 
+func (plugin *mockVolumePlugin) SupportsBulkVolumeVerification() bool {
+	return false
+}
+
 func (plugin *mockVolumePlugin) ConstructVolumeSpec(volumeName, mountPath string) (*vol.Spec, error) {
 	return nil, nil
 }