Support VLAN network in gateway node.

Change-Id: Ia18287bf072e47787ba71865e8f8c4cb032dc455
(cherry picked from commit 4063f40a0eb0639bb96e5e0ebf5f39954ab7ccae)
diff --git a/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/KubevirtFlowRuleManager.java b/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/KubevirtFlowRuleManager.java
index fa5aeda..ffb73e2 100644
--- a/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/KubevirtFlowRuleManager.java
+++ b/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/impl/KubevirtFlowRuleManager.java
@@ -75,6 +75,7 @@
 import static org.onosproject.kubevirtnetworking.impl.OsgiPropertyConstants.PROVIDER_NETWORK_ONLY;
 import static org.onosproject.kubevirtnetworking.impl.OsgiPropertyConstants.PROVIDER_NETWORK_ONLY_DEFAULT;
 import static org.onosproject.kubevirtnetworking.util.KubevirtNetworkingUtil.getPropertyValueAsBoolean;
+import static org.onosproject.kubevirtnode.api.KubevirtNode.Type.GATEWAY;
 import static org.onosproject.kubevirtnode.api.KubevirtNode.Type.WORKER;
 import static org.slf4j.LoggerFactory.getLogger;
 
@@ -350,7 +351,8 @@
 
         @Override
         public boolean isRelevant(KubevirtNodeEvent event) {
-            return event.subject().type().equals(WORKER);
+            return event.subject().type().equals(WORKER) ||
+                    event.subject().type().equals(GATEWAY);
         }
 
         private boolean isRelevantHelper() {