b25c6b15fe
At present, cinder/nova/glance/gnocchi relative containers's ceph.conf aren't be merge from user custom's config. In some condition, we should add extra parameter to custom's ceph.conf, for example:rbd_default_features = 1. So, it is necessary to use merge_configs instead of template. Closes-Bug: #1656162 Change-Id: I824e0c68af270b85c52382ae35987213266fc6f6