Fix: statically add portnumber of intg and ext bridge

1. install service flow rules for all types of services including
ClusterIP, NodePort, LoadBalancer

Change-Id: I9884c7e5dfef66e7af5497403dd3cba6c6b46b61
diff --git a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sRoutingArpHandler.java b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sRoutingArpHandler.java
index 9986760..8e80419 100644
--- a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sRoutingArpHandler.java
+++ b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/impl/K8sRoutingArpHandler.java
@@ -184,6 +184,11 @@
     }
 
     private void setPodArpRequestRule(K8sNode k8sNode, boolean install) {
+        if (k8sNode.extBridgePortNum() == null) {
+            log.warn("External bridge port is disabled.");
+            return;
+        }
+
         TrafficSelector selector = DefaultTrafficSelector.builder()
                 .matchInPort(k8sNode.extToIntgPatchPortNum())
                 .matchEthType(Ethernet.TYPE_ARP)