Support STT tunneling protocol at kubevirt networking app

Change-Id: Icbef76dbfb842ce1cf6893bf18ee80c4b1b26006
diff --git a/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/util/KubevirtNetworkingUtil.java b/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/util/KubevirtNetworkingUtil.java
index 21353b9..82d3964 100644
--- a/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/util/KubevirtNetworkingUtil.java
+++ b/apps/kubevirt-networking/app/src/main/java/org/onosproject/kubevirtnetworking/util/KubevirtNetworkingUtil.java
@@ -320,6 +320,8 @@
                 return node.grePort();
             case GENEVE:
                 return node.genevePort();
+            case STT:
+                return node.sttPort();
             default:
                 break;
         }
@@ -446,6 +448,8 @@
                 return node.grePort();
             case GENEVE:
                 return node.genevePort();
+            case STT:
+                return node.sttPort();
             case FLAT:
             case VLAN:
             default: