Configure region name in neutron & ceilometer config files

Because of lacking some options in multi-region env, neutron and
ceilometer can not work after setup a multi-region env using
devstack.
This patch adds related options for multi-region env.

Change-Id: I4de890b233366f9526fa283aa9078a4d6ed0ca23
Closes-Bug: #1409589
diff --git a/lib/ceilometer b/lib/ceilometer
index f6280d9..d9064e2 100644
--- a/lib/ceilometer
+++ b/lib/ceilometer
@@ -200,6 +200,8 @@
     iniset $CEILOMETER_CONF service_credentials os_username ceilometer
     iniset $CEILOMETER_CONF service_credentials os_password $SERVICE_PASSWORD
     iniset $CEILOMETER_CONF service_credentials os_tenant_name $SERVICE_TENANT_NAME
+    iniset $CEILOMETER_CONF service_credentials os_region_name $REGION_NAME
+    iniset $CEILOMETER_CONF service_credentials os_auth_url $KEYSTONE_SERVICE_URI/v2.0
 
     configure_auth_token_middleware $CEILOMETER_CONF ceilometer $CEILOMETER_AUTH_CACHE_DIR