Transifex-ify ceilometer.

Added translation related jobs for ceilometer. Part of the fixing for
bug 1082805.

Change-Id: Ia609e90a099bf2e8632e655201651d1f3ad4ba0b
Reviewed-on: https://review.openstack.org/19026
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Lianhao Lu <lianhao.lu@intel.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
add gearman-plugin-build gate

Change-Id: I8006acede452c9d15bf383007d1ba680d2ba637b
Reviewed-on: https://review.openstack.org/19525
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Cosmetic changes to layout.yaml.

* Make description of publish pipeline less redundant.
* Rename publish to release (since there's a pre-release pipe).
* Rename fake null/tempest project to z/tempest so it doesn't show
  up first in the change queue name.

Change-Id: Ie91f937bf10be1fd63fd11ff949211e2e8ac428f
Reviewed-on: https://review.openstack.org/19671
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins