Fixes OpenstackNetworking just sends warn msg when unsupported ovs-based sr-iov event occurs.

Change-Id: I375c55e55be2669224743e1412d02975989e30ad
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java
index 399b564..c6ff793 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackDirectPortAddCommand.java
@@ -27,6 +27,8 @@
 
 import java.util.Optional;
 
+import static org.onosproject.openstacknetworking.api.Constants.UNSUPPORTED_VENDOR;
+import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.getIntfNameFromPciAddress;
 import static org.onosproject.openstacknode.api.OpenstackNode.NodeType.COMPUTE;
 
 /**
@@ -61,10 +63,13 @@
             return;
         }
 
-        String intfName = OpenstackNetworkingUtil.getIntfNameFromPciAddress(port);
+        String intfName = getIntfNameFromPciAddress(port);
         if (intfName == null) {
             log.error("Failed to retrieve interface name from a port {}", portId);
             return;
+        } else if (intfName.equals(UNSUPPORTED_VENDOR)) {
+            log.warn("Failed to retrieve interface name from a port {} because of unsupported ovs-based sr-iov");
+            return;
         }
 
         if (OpenstackNetworkingUtil.hasIntfAleadyInDevice(osNode.get().intgBridge(),