Also bump example container versions to v3.0.0, and use k8s.gcr.io/sig-storage instead of quay.io/k8scsi.
rbac-external-provisioner.yaml was copied from https://github.com/kubernetes-csi/external-provisioner/blob/master/deploy/kubernetes/rbac.yaml and must be refreshed when updating the external-provisioner image in setup-csi-snapshotter.yaml