role assertion failure is returned to DeviceProvider

Change-Id: Ic5189327c85fa37b3bbfa07d0e285cabae363712
diff --git a/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java b/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java
index 101856e..d5cccc4 100644
--- a/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java
+++ b/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java
@@ -394,6 +394,10 @@
         public void disconnectSwitch() {
         }
 
+        @Override
+        public void returnRoleAssertFailure(RoleState role) {
+        }
+
     }
 
 }