Note:
See https://kubernetes.io/blog/2019/07/18/api-deprecations-in-1-16/
- PSP is introduced in policy apigroup in 1.10, and removed from extensions apigroup in 1.16.
- DaemonSet, Deployment, StatefulSet, and ReplicaSet migrate to apps in 1.9, and no longer be served from extensions in 1.16
- Ingress is migrated to networking.k8s.io in 1.14, and will be removed from extensions in 1.18