helm: Add storage class template to ceph-csi-rbd
helm: Add storage class template to ceph-csi-rbd

Deploy storage class when using the helm chart.

Signed-off-by: Yug <0bdbd163d0c315ea6160e8172ff8eceaf795a460@gmail.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi