Adding emptyTreatment() and emptySelector()

Note: There was a change that adds a DROP action to
a traffic treatment if there are no other actions present.
To get a traffic treatment without the drop rule, use
emptyTreatment()

Change-Id: I1f23ed5e1fa7519eb94fcafa85facbad815d5e9c
diff --git a/apps/sdnip/src/test/java/org/onosproject/sdnip/PeerConnectivityManagerTest.java b/apps/sdnip/src/test/java/org/onosproject/sdnip/PeerConnectivityManagerTest.java
index bc0972f..7ec843b 100644
--- a/apps/sdnip/src/test/java/org/onosproject/sdnip/PeerConnectivityManagerTest.java
+++ b/apps/sdnip/src/test/java/org/onosproject/sdnip/PeerConnectivityManagerTest.java
@@ -108,7 +108,7 @@
             new ConnectPoint(deviceId2, PortNumber.portNumber(1));
 
     private final TrafficTreatment noTreatment =
-            DefaultTrafficTreatment.builder().build();
+            DefaultTrafficTreatment.emptyTreatment();
 
     @Before
     public void setUp() throws Exception {