deploy: add configmap for ceph.conf
deploy: add configmap for ceph.conf

added an example configmap for the
ceph.conf file. This allows the users to
specify different ceph configuration when
deploying cephcsi.

Signed-off-by: Madhu Rajanna <60fbf37a92c2a0908e31296d18dadbec5a4dae17@gmail.com>

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