Move cinder_service_region to group_vars/all.yml since os_magnum
relies on it.
Remove CRLFs from magnum_all.yml.
Set _rabbit_mq_host_group, it's required on the rabbitmq task.
Use magnum_galera_database_name for the db_name instead of
magnum_galera_database.
Change the magnum haproxy config to use GET for httpchk since
mangum API doesn't appear to support the HEAD request. Using
HEAD results in haproxy NOSRV errors with the backend.
Change-Id: I1562f8418e5075720ba8622262f4f13cf2d35fb6
527e22fc0e