CI: set the same gate queue for kolla and kolla-ansible

This is to ensure that any Depends-On does not cause Zuul not to pick up
the change for gating due to no notifications between queues.
Previously W+1-ing a change which depended on non-merged change from
the other project caused it to remain in the same state.

Change-Id: I1815c3f30c3208b31501d1b7c2bd6be99db437e5
Signed-off-by: Radosław Piliszek <[email protected]>
(cherry picked from commit 4884203)

Author: yoctozepto

.zuul.d/centos.yaml

@@ -21,6 +21,7 @@
         - kolla-ansible-centos-source-ceph:
             files: ^docker\/(ceph|cinder)\/.*
     gate:
+      queue: kolla
       jobs:
         - kolla-build-centos-source
         - tripleo-build-containers-centos-7:

.zuul.d/ubuntu.yaml

@@ -12,6 +12,7 @@
         - kolla-ansible-ubuntu-source-ceph:
             files: ^docker\/(ceph|cinder)\/.*
     gate:
+      queue: kolla
       jobs:
         - kolla-build-ubuntu-source
     periodic: