`terraform destroy` for the GKE cluster does not remove PVs. We need to delete the disks with a destroy-time provisioner: https://www.terraform.io/docs/provisioners/index.html#destroy-time-provisioners
terraform destroyfor the GKE cluster does not remove PVs. We need to delete the disks with a destroy-time provisioner:https://www.terraform.io/docs/provisioners/index.html#destroy-time-provisioners