Set default branch for git review/gerrit. Switch tests to stable. Switch to using stable charm-helpers branch. Switch to using stable charm.openstack branch. Change-Id: I8aee823f98a9c4b3a56019b445410c645b2bb423
Set default branch for git review/gerrit. Switch tests to stable. Switch to using stable charm-helpers branch. Switch to using stable charm.openstack branch. Change-Id: I8aee823f98a9c4b3a56019b445410c645b2bb423