If a mon is added or removed in a ceph
cluster all the CSI clusterID's belongs
to the ceph cluster should also gets updated.
Added a new cluster identifier to the csi configmap,
i.e ceph clusterNamespace which helps to identify
the clusterID's belongs to that ceph cluster.
Note:- to support the upgraded clusters,we
can ask users to update the mon IP's for the
problamatic clusterID as it wont be updated
by the operator.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>