Xpliant ONOS driver support added

Change-Id: I3691a1d6035a8f7d8727b8bded70339e3df0dd94
diff --git a/drivers/default/src/main/java/org/onosproject/driver/pipeline/XpliantGroupHandler.java b/drivers/default/src/main/java/org/onosproject/driver/pipeline/XpliantGroupHandler.java
new file mode 100644
index 0000000..ca01b3b
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/pipeline/XpliantGroupHandler.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2017 Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.driver.pipeline;
+
+import org.onosproject.driver.pipeline.ofdpa.Ofdpa3GroupHandler;
+
+
+public class XpliantGroupHandler extends Ofdpa3GroupHandler {
+
+    /**
+     * Determines whether this pipeline support copy ttl instructions or not.
+     *
+     * @return false if copy ttl instructions is not supported
+     */
+    @Override
+    protected boolean supportCopyTtl() {
+        return false;
+    }
+
+}