Bug fix for Dell driver to use dummy group as flow-actions

Change-Id: I2ca81217ad8a51fe0f8f907a1befaa0fd947e40f
diff --git a/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java b/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java
index 049e0c5..ad235f9 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/pipeline/SpringOpenTTP.java
@@ -1116,11 +1116,18 @@
             }
         }
 
-        @SuppressWarnings("unused")
         public GroupKey key() {
             return key;
         }
 
+        public boolean dummy() {
+            return dummy;
+        }
+
+        public TrafficTreatment treatment() {
+            return treatment;
+        }
+
         @Override
         public byte[] data() {
             return appKryo.serialize(this);