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/lib/ceilometer b/lib/ceilometer
index 76ab254..c31fcb9 100644
--- a/lib/ceilometer
+++ b/lib/ceilometer
@@ -29,6 +29,7 @@
 
 # Set up default directories
 CEILOMETER_DIR=$DEST/ceilometer
+CEILOMETERCLIENT_DIR=$DEST/python-ceilometerclient
 CEILOMETER_CONF_DIR=/etc/ceilometer
 CEILOMETER_CONF=$CEILOMETER_CONF_DIR/ceilometer.conf
 CEILOMETER_API_LOG_DIR=/var/log/ceilometer-api
@@ -46,6 +47,11 @@
     mongo ceilometer --eval "db.dropDatabase();"
 }
 
+# configure_ceilometerclient() - Set config files, create data dirs, etc
+function configure_ceilometerclient() {
+    setup_develop $CEILOMETERCLIENT_DIR
+}
+
 # configure_ceilometer() - Set config files, create data dirs, etc
 function configure_ceilometer() {
     setup_develop $CEILOMETER_DIR
@@ -87,6 +93,11 @@
     git_clone $CEILOMETER_REPO $CEILOMETER_DIR $CEILOMETER_BRANCH
 }
 
+# install_ceilometerclient() - Collect source and prepare
+function install_ceilometerclient() {
+    git_clone $CEILOMETERCLIENT_REPO $CEILOMETERCLIENT_DIR $CEILOMETERCLIENT_BRANCH
+}
+
 # start_ceilometer() - Start running processes, including screen
 function start_ceilometer() {
     screen_it ceilometer-acompute "cd $CEILOMETER_DIR && sg libvirtd \"$CEILOMETER_BIN_DIR/ceilometer-agent-compute --config-file $CEILOMETER_CONF\""