add missed functions of PGW service

Change-Id: Ib89ba5f369736d9a939fb7b8028916ac186a4ef9
diff --git a/xos/synchronizer/vpgwc_config b/xos/synchronizer/vpgwc_config
index c6b9c23..d5cf77c 100755
--- a/xos/synchronizer/vpgwc_config
+++ b/xos/synchronizer/vpgwc_config
@@ -10,7 +10,8 @@
 [api]
 nova_enabled=True
 
-# Sets options for the observer
+
+# Sets options for the synchronizer
 [observer]
 # Optional name
 name=vpgwc