Add LispMessageEncoder and LispMessageDecoder with unit tests

Change-Id: If73a41687a9c2400de23bbde6179a63ac7f75d15
diff --git a/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/ChannelAdapter.java b/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/ChannelAdapter.java
new file mode 100644
index 0000000..1900d24
--- /dev/null
+++ b/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/ChannelAdapter.java
@@ -0,0 +1,230 @@
+/*
+ * 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.ctl;
+
+import io.netty.buffer.ByteBufAllocator;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelConfig;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.ChannelPromise;
+import io.netty.channel.ChannelProgressivePromise;
+import io.netty.channel.ChannelMetadata;
+import io.netty.channel.EventLoop;
+import io.netty.util.Attribute;
+import io.netty.util.AttributeKey;
+
+import java.net.SocketAddress;
+
+/**
+ * Adapter for testing against a netty channel.
+ */
+public class ChannelAdapter implements Channel {
+    @Override
+    public EventLoop eventLoop() {
+        return null;
+    }
+
+    @Override
+    public Channel parent() {
+        return null;
+    }
+
+    @Override
+    public ChannelConfig config() {
+        return null;
+    }
+
+    @Override
+    public boolean isOpen() {
+        return false;
+    }
+
+    @Override
+    public boolean isRegistered() {
+        return false;
+    }
+
+    @Override
+    public boolean isActive() {
+        return false;
+    }
+
+    @Override
+    public ChannelMetadata metadata() {
+        return null;
+    }
+
+    @Override
+    public SocketAddress localAddress() {
+        return null;
+    }
+
+    @Override
+    public SocketAddress remoteAddress() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture closeFuture() {
+        return null;
+    }
+
+    @Override
+    public boolean isWritable() {
+        return false;
+    }
+
+    @Override
+    public Unsafe unsafe() {
+        return null;
+    }
+
+    @Override
+    public ChannelPipeline pipeline() {
+        return null;
+    }
+
+    @Override
+    public ByteBufAllocator alloc() {
+        return null;
+    }
+
+    @Override
+    public ChannelPromise newPromise() {
+        return null;
+    }
+
+    @Override
+    public ChannelProgressivePromise newProgressivePromise() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture newSucceededFuture() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture newFailedFuture(Throwable cause) {
+        return null;
+    }
+
+    @Override
+    public ChannelPromise voidPromise() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture bind(SocketAddress localAddress) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture connect(SocketAddress remoteAddress) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture connect(SocketAddress remoteAddress, SocketAddress localAddress) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture disconnect() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture close() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture deregister() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture bind(SocketAddress localAddress, ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture connect(SocketAddress remoteAddress, ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture connect(SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture disconnect(ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture close(ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture deregister(ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public Channel read() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture write(Object msg) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture write(Object msg, ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public Channel flush() {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture writeAndFlush(Object msg, ChannelPromise promise) {
+        return null;
+    }
+
+    @Override
+    public ChannelFuture writeAndFlush(Object msg) {
+        return null;
+    }
+
+    @Override
+    public <T> Attribute<T> attr(AttributeKey<T> attributeKey) {
+        return null;
+    }
+
+    @Override
+    public int compareTo(Channel o) {
+        return 0;
+    }
+}