This is to add support for external ceph cluster as second backend
for cinder.
prerequisite:
- create ceph.conf for external ceph cluster as configmap
- create cinder2 user and keyring on external ceph cluster
- create keyring of user cinder2 as a secret
now point configmap and secret created as prerequisite under
values.ceph_client.external_ceph section
also we need to add second backend under values.conf.backends section
with all the details of external ceph cluster.
Change-Id: I8df9f1da7208304f479dbb70b19af97fb01cd38f
054affa290