Bumping netty dependency versions to 4.1.5.Final.

Including test fixes.

Few more places referencing atomix version

Change-Id: I48fb8fa255624a86ae12117845603f7d53f1c29e
diff --git a/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/impl/ChannelAdapter.java b/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/impl/ChannelAdapter.java
index ebed442..22e7efe 100644
--- a/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/impl/ChannelAdapter.java
+++ b/protocols/lisp/ctl/src/test/java/org/onosproject/lisp/ctl/impl/ChannelAdapter.java
@@ -19,6 +19,7 @@
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelConfig;
 import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelId;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.ChannelPromise;
 import io.netty.channel.ChannelProgressivePromise;
@@ -34,6 +35,11 @@
  */
 public class ChannelAdapter implements Channel {
     @Override
+    public ChannelId id() {
+        return null;
+    }
+
+    @Override
     public EventLoop eventLoop() {
         return null;
     }
@@ -89,6 +95,16 @@
     }
 
     @Override
+    public long bytesBeforeUnwritable() {
+        return 0;
+    }
+
+    @Override
+    public long bytesBeforeWritable() {
+        return 0;
+    }
+
+    @Override
     public Unsafe unsafe() {
         return null;
     }
@@ -224,6 +240,11 @@
     }
 
     @Override
+    public <T> boolean hasAttr(AttributeKey<T> key) {
+        return false;
+    }
+
+    @Override
     public int compareTo(Channel o) {
         return 0;
     }