IP change may be involved in HOST_MOVED event. Should resolve the route again.

Change-Id: I18035f4d9fc690633df71395d7c72a81af050ff4
diff --git a/apps/route-service/app/src/main/java/org/onosproject/routeservice/impl/RouteManager.java b/apps/route-service/app/src/main/java/org/onosproject/routeservice/impl/RouteManager.java
index 2adef10..d620a4c 100644
--- a/apps/route-service/app/src/main/java/org/onosproject/routeservice/impl/RouteManager.java
+++ b/apps/route-service/app/src/main/java/org/onosproject/routeservice/impl/RouteManager.java
@@ -390,6 +390,7 @@
             switch (event.type()) {
             case HOST_ADDED:
             case HOST_UPDATED:
+            case HOST_MOVED:
                 log.trace("Scheduled host event {}", event);
                 hostEventExecutor.execute(() -> hostUpdated(event.subject()));
                 break;
@@ -397,8 +398,6 @@
                 log.trace("Scheduled host event {}", event);
                 hostEventExecutor.execute(() -> hostRemoved(event.subject()));
                 break;
-            case HOST_MOVED:
-                break;
             default:
                 break;
             }