Remove gate-django_openstack_auth-noop job.

django_openstack_auth has proper tests now and they pass. This makes the
gate-django_openstack_auth-noop unnecessary if we gate on the other
jobs. Make the other jobs voting and remove the unneeded noop job.

Change-Id: Ic10c5e6cbffdb096cbb1684d1265859a04b38c17
Merge "Remove gate-django_openstack_auth-noop job."