Switch OSA Xenial jobs to voting
Switch OSA Xenial jobs to voting

This patch switches the Xenial job for the integrated repository to
non-voting and promotes all the OpenStack service role repositories
(except Zaqar, which isn't working yet) to voting jobs.

Change-Id: Ib7e308f491e041497d54abfc52b5d12a5c6621b6

openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config,Tesora/tesora-project-config