more info on which Openstack release to use
more info on which Openstack release to use

Change-Id: Ia99b38368637cb6da891b53dd22fde517e451f5f

openstack/networking-bagpipe-l2,openstack/networking-bagpipe,openstack/networking-bagpipe-l2,stackforge/networking-bagpipe-l2,stackforge/networking-bagpipe-l2,openstack/networking-bagpipe