Implement packet seriailizer and deserializer for LACP

Change-Id: Idbbd87a3ddeb477cac49a65e6a5c768761019e11
diff --git a/utils/misc/src/main/java/org/onlab/packet/lacp/LacpTlv.java b/utils/misc/src/main/java/org/onlab/packet/lacp/LacpTlv.java
new file mode 100644
index 0000000..dedb095
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/packet/lacp/LacpTlv.java
@@ -0,0 +1,23 @@
+/*
+ * 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.onlab.packet.lacp;
+
+import org.onlab.packet.BasePacket;
+
+public abstract class LacpTlv extends BasePacket {
+    public static final byte HEADER_LENGTH = 2;
+}