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

Change-Id: I4717f0af6731b41eaf3114994f2087af74c3e3f5
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
index f6b8e50..837c891 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
@@ -531,6 +531,9 @@
                     setArpRequestRule(event.subject(), false);
                     setArpReplyRule(event.subject(), false);
                     break;
+                case OPENSTACK_INSTANCE_MIGRATION_ENDED:
+                    setArpRequestRule(event.subject(), false);
+                    break;
                 default:
                     break;
             }