
This patch makes the following changes in preparation for the new multi-node gates: 1. Resolves some issues in the devstack plugin in multi-node mode. 2. Removes the legacy non-voting multi-node gates and playbooks. 3. Removes the lxd legacy playbook as the jobs were removed in a previous patch. Change-Id: I3fb303a67cc66ec44a4ef4d09a16ed6470cbbaff