Add ceilometer to the sys.path before the nova starts

The setup.py setup develop adds package to the
 /usr/lib/python2.7/site-packages/easy-install.pth.

The nova uses the ceilometer.compute.nova_notifier, so it must be
in the path before the nova started.

Change-Id: I80ed5e5611278e75afa7ab7f8fb91417897d423f
diff --git a/stack.sh b/stack.sh
index 3fa025f..4da13fe 100755
--- a/stack.sh
+++ b/stack.sh
@@ -736,6 +736,9 @@
 if is_service_enabled ceilometer; then
     install_ceilometerclient
     install_ceilometer
+    echo_summary "Configuring Ceilometer"
+    configure_ceilometer
+    configure_ceilometerclient
 fi
 
 if is_service_enabled heat; then
@@ -1211,9 +1214,6 @@
     start_cinder
 fi
 if is_service_enabled ceilometer; then
-    echo_summary "Configuring Ceilometer"
-    configure_ceilometer
-    configure_ceilometerclient
     echo_summary "Starting Ceilometer"
     init_ceilometer
     start_ceilometer