[ONOS-7752] check north-south reachability for troubleshoot purpose

Change-Id: I973047c0fcd4fb241ad010fbbef9d016510b8deb
diff --git a/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterService.java b/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterService.java
index a1a8d30..18bf967 100644
--- a/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterService.java
+++ b/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/OpenstackRouterService.java
@@ -68,6 +68,7 @@
 
     /**
      * Returns the floating IP with the supplied floating IP ID.
+     *
      * @param floatingIpId floating ip id
      * @return openstack floating ip
      */