Add ceph-calamari role for deploying Calamari

Signed-off-by: Tim Serong <tserong@suse.com>
AFAIK, when downgrading, the template is the one from the old revision (the one you downgrade to). Which in that case wouldn't have ```ceph-calamari``` in it. At least that's what I understand from looking at https://github.com/crowbar/barclamp-crowbar/blob/master/crowbar_framework/lib/schema_migration.rb#L123 and following.

Though this raises the question (unrelated to this PR) how downgrading can ever work when installing barclamps from rpm. (If the old template is installed, the downgrade script must already be gone, or am I missing something?)