[ONOS-5480] The implementation of LISP Encapsulated Control Message (ECM).

Changes
1. ECM message is added.
2. Default ECM message is added with builder, reader, and writer.
3. Implented other messages writeTo() methods.

Change-Id: I3ed6f66a7ec7a318f30596d64c35ac15365c8c4c
diff --git a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispInfo.java b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispInfo.java
index 14cd884..7413245 100644
--- a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispInfo.java
+++ b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/DefaultLispInfo.java
@@ -82,8 +82,8 @@
     }
 
     @Override
-    public void writeTo(ByteBuf byteBuf) {
-        // TODO: serialize LispMapRegister message
+    public void writeTo(ByteBuf byteBuf) throws LispWriterException {
+        serialize(byteBuf, this);
     }
 
     @Override