Rachana, Could you please try to set ceph_stable_rh_storage_version: 2 in group_vars/all and see if you get the same error? Currently, 1.3 is the default. Thanks.
Moving this bug to verified as it's try to enable 2.0 repo bydefault and will not install 1.3 repo.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2016:1754
Now that we've reached GA for RHCS 2, I've pushed the final downstream change for this BZ upstream to GitHub, in https://github.com/ceph/ceph-ansible/pull/999