Implement kubernetes external loadbalancer handler.

Change-Id: I0f3057d66769f0ca7db7d508483835cdd1ff1593
(cherry picked from commit 5ff76b7bd3ef45b8538464a6fc510995d120739e)
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeWatcher.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeWatcher.java
index 5ff2856..3949d79 100644
--- a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeWatcher.java
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/impl/KubevirtNodeWatcher.java
@@ -186,7 +186,7 @@
             }
 
             KubevirtNode kubevirtNode = buildKubevirtNode(node);
-            log.info("buildKubevirtNode: {}", kubevirtNode.toString());
+            log.info("buildKubevirtNode: {}", kubevirtNode);
             if (kubevirtNode.type() == WORKER || kubevirtNode.type() == GATEWAY) {
                 if (!kubevirtNodeAdminService.hasNode(kubevirtNode.hostname())) {
                     kubevirtNodeAdminService.createNode(kubevirtNode);