Adding route blackhole

Change-Id: I70212b0ab91e628e8528bca896c3aecc499e31b1
diff --git a/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/OvsOfdpa2Pipeline.java b/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/OvsOfdpa2Pipeline.java
index 013b98e..3aa8865 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/OvsOfdpa2Pipeline.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/pipeline/ofdpa/OvsOfdpa2Pipeline.java
@@ -50,4 +50,9 @@
     protected boolean supportPuntGroup() {
         return true;
     }
+
+    @Override
+    protected boolean supportsUnicastBlackHole() {
+        return true;
+    }
 }