message: update this to be a list.
diff: ----
  -apiVersion: scheduling.k8s.io/v1beta1
  +apiVersion: v1
  +kind: List
  +items:
  +- apiVersion: scheduling.k8s.io/v1beta1
  kind: PriorityClass
  metadata:
  name: priority-development
  value: 1000000
  globalDefault: false
  description: "This priority class should be used for production environments."
  ----
  -apiVersion: scheduling.k8s.io/v1beta1
  +- apiVersion: scheduling.k8s.io/v1beta1
  kind: PriorityClass
  metadata:
  name: priority-development
  