Fixes ceilometer tamplate  for oslo.messaging drivers test
Fixes ceilometer tamplate  for oslo.messaging drivers test

Adds devstack pluging to $PROJECTS

Change-Id: Ie47fcd1b8b15f0afb3f9c81cdff2669c2a509279

dongwenjuan/project-config,dongwenjuan/project-config,noorul/os-project-config,openstack-infra/project-config,Tesora/tesora-project-config,Tesora/tesora-project-config,openstack-infra/project-config,noorul/os-project-config