[ONOS-4718] Initially add five LISP message interfaces and classes

Change-Id: I9d21595823680644ec107c85b0b38acdd1534568
diff --git a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java
new file mode 100644
index 0000000..6021931
--- /dev/null
+++ b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispMapNotify.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.lisp.msg.protocols;
+
+import io.netty.buffer.ByteBuf;
+
+/**
+ * Default LISP map notify message class.
+ */
+public class DefaultLispMapNotify implements LispMapNotify {
+
+    @Override
+    public LispType getType() {
+        return null;
+    }
+
+    @Override
+    public void writeTo(ByteBuf byteBuf) {
+
+    }
+
+    @Override
+    public Builder createBuilder() {
+        return null;
+    }
+}