Test:
Build pass with build pkgs and build iso, and then build rpms for installer,
update installer and rebuild iso again. And deploy multi-node test pass.
Depends-On: https://review.openstack.org/628835/
Story: 2004522
Task: 28413
Change-Id: Iaba803124b9795df206646f6bc24c2862795bbdd
Signed-off-by: Martin, Chen <haochuan.z.chen@intel.com>