Add ceilometer client in devstack

Ceilometer client CLI is helpful to develop ceilometer related code. Add
it to devstack also involve more developer to use it.

Change-Id: I4147e50c00cb520ec15d63a0c34524ba8cb6654f
Signed-off-by: Yunhong, Jiang <yunhong.jiang@intel.com>
diff --git a/stackrc b/stackrc
index 0e84db8..4e03a2f 100644
--- a/stackrc
+++ b/stackrc
@@ -33,6 +33,10 @@
 CEILOMETER_REPO=${GIT_BASE}/openstack/ceilometer.git
 CEILOMETER_BRANCH=master
 
+# ceilometer client library
+CEILOMETERCLIENT_REPO=${GIT_BASE}/openstack/python-ceilometerclient
+CEILOMETERCLIENT_BRANCH=master
+
 # volume service
 CINDER_REPO=${GIT_BASE}/openstack/cinder
 CINDER_BRANCH=master