Neutron refactor: Fix missing call to init RPC backend

Change-Id: I2c7f116230f53d3a2460192bc7b513b2e230c736
diff --git a/lib/neutron b/lib/neutron
index 51c3a00..e0f71f5 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -126,6 +126,8 @@
     iniset $NEUTRON_CONF oslo_concurrency lock_path $NEUTRON_STATE_PATH/lock
     iniset $NEUTRON_CONF DEFAULT use_syslog $SYSLOG
 
+    iniset_rpc_backend neutron $NEUTRON_CONF
+
     # Neutron API server & Neutron plugin
     if is_service_enabled neutron-api; then
         local policy_file=$NEUTRON_CONF_DIR/policy.json