Is this a bug report or feature request?

• Bug Report

Deviation from expected behavior:
Currently, DELETE event of PVC is not handled by the NFS provisioner. So stale PVs can come into the picture during. This needs to be avoided.

Expected behavior:
PV provisioned by the NFS provisioner should get addressed by the provisioner for PVC DELETE event.

How to reproduce it (minimal and precise):

Environment:

• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Cloud provider or hardware configuration:
• Rook version (use rook version inside of a Rook Pod):
• Kubernetes version (use kubectl version):
• Kubernetes cluster type (e.g. Tectonic, GKE, OpenShift):
• Storage backend status (e.g. for Ceph use ceph health in the Rook Ceph toolbox):