Remove non-voting jobs from gate queue
Remove non-voting jobs from gate queue

Non-voting jobs should not be in gate queue at all, remove them.
They are wasting needlessly are resources.

To make clearer which jobs are non-voting, move voting:false
from base job to individual jobs.

Make watcherclient-tempest-functional as voting job and explicitly set
it non-voting in project stanza so that it can be easier to make it
voting in other repos.

Change-Id: Id94e49347006bca850f72a0400794da8c2a67144

openstack/watcher,openstack/watcher,stackforge/watcher,stackforge/watcher