ONOS extensions for use of egress tables.

This patch depends on 17671 onos-loxi patch. When we make
the new loxi release we need to change the prebuild
openflowj in lib/BUCK to that of the actual release number.

It provides support for programming l2 unfiltered groups,
the egress vlan table and the egress tpid table.

Depends-On: I3cea6ed2234147c8dbe440ae1701856a60706e7c
Change-Id: I7525f5856300eac25548b5219a5dffed12b291ad
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3AllowVlanTranslationType.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3AllowVlanTranslationType.java
new file mode 100644
index 0000000..e9ebacb
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/Ofdpa3AllowVlanTranslationType.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018-present 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.extensions;
+
+public enum Ofdpa3AllowVlanTranslationType {
+    NOT_ALLOW((byte) 0),
+    ALLOW((byte) 1);
+
+    private byte value;
+
+    Ofdpa3AllowVlanTranslationType(byte value) {
+        this.value = value;
+    }
+
+    /*
+     * Get value as a byte.
+     */
+    public byte getValue() {
+        return this.value;
+    }
+}