helm: Add secret template to ceph-csi-cephfs
helm: Add secret template to ceph-csi-cephfs

Deploy cephfs secret when using the ceph-csi-cephfs
helm chart.

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

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