Activate devstack gate for Ceilometer
Activate devstack gate for Ceilometer

We want to have devstack running and launching Ceilometer when we submit
patches.

Change-Id: I66ee9ff2d0568ea46fbe120612656d2c4ac9e27f

coolsvap/project-config,dongwenjuan/project-config,noorul/os-project-config,citrix-openstack/project-config,anbangr/osci-project-config,osrg/project-config,anbangr/osci-project-config,noorul/os-project-config,citrix-openstack/project-config,openstack-infra/project-config,dongwenjuan/project-config,Tesora/tesora-project-config,coolsvap/project-config,openstack-infra/project-config,open-switch/infra_project-config,osrg/project-config,open-switch/infra_project-config,Tesora/tesora-project-config