[ONOS-4612]Update SFC flows inline with the Official OVS NSH patch

Change-Id: If58517841096a939860d88aa78eca7cae46b9935
diff --git a/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java b/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java
index c33d929..94aab56 100644
--- a/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java
+++ b/apps/vtn/vtnweb/src/test/java/org/onosproject/vtnweb/resources/PortPairGroupResourceTest.java
@@ -136,6 +136,10 @@
                     Objects.equals(this.portPairGroupId, portPairGroup.portPairGroupId()) &&
                     Objects.equals(this.tenantId, portPairGroup.tenantId());
         }
+
+        @Override
+        public void resetLoad() {
+        }
     }
 
     /**