Fix SONAR complaint about missing break statements

Change-Id: I02697f36841cb43cbca4b65f5e2ab79cf33ec441
diff --git a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java
index 0a915b7..11b3247 100644
--- a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java
+++ b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java
@@ -948,8 +948,10 @@
                     break;
                 case OPENSTACK_ROUTER_GATEWAY_ADDED:
                     log.debug("Router external gateway {} added", event.externalGateway().getNetworkId());
+                    break;
                 case OPENSTACK_ROUTER_GATEWAY_REMOVED:
                     log.debug("Router external gateway {} removed", event.externalGateway().getNetworkId());
+                    break;
                 case OPENSTACK_FLOATING_IP_CREATED:
                 case OPENSTACK_FLOATING_IP_UPDATED:
                 case OPENSTACK_FLOATING_IP_REMOVED: