CORD-772 Added make target and TOSCA spec for example UI extension

Change-Id: If26ccc840259e82edcec11df2949fd6798bcdfbc
diff --git a/opencloud/Makefile b/opencloud/Makefile
index 4b2e571..6078f14 100644
--- a/opencloud/Makefile
+++ b/opencloud/Makefile
@@ -11,7 +11,7 @@
 # Include common functions
 include $(COMMON_DIR)/Makefile
 
-xos: prereqs config_dirs xos_download opencloud_services bootstrap onboarding
+xos: prereqs config_dirs xos_download opencloud_services bootstrap onboarding rest-gw ui
 
 opencloud_services: $(SERVICE_DIR) \
 	$(SERVICE_DIR)/onos-service \