[ONOS-7684] Support VM Live Migration (VxLAN + VLAN)

Change-Id: I4717f0af6731b41eaf3114994f2087af74c3e3f5
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java
index 142a9f7..e174eef 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingHandler.java
@@ -1060,6 +1060,14 @@
                         instPortRemoved(event.subject());
                     });
                     break;
+                case OPENSTACK_INSTANCE_MIGRATION_ENDED:
+                    eventExecutor.execute(() -> {
+                        log.info("RoutingHandler: Instance port vanished MAC:{} IP:{} due to VM migration",
+                                instPort.macAddress(),
+                                instPort.ipAddress());
+                        // TODO: need to reconfigure rules to point to update VM
+                    });
+                    break;
                 default:
                     break;
             }