ONOS-2578 Added codec for mod tcp/udp port instructions

Change-Id: Iab1eac26afe47e0b1c13ce94e152826b0828e455
diff --git a/core/common/src/main/java/org/onosproject/codec/impl/InstructionCodec.java b/core/common/src/main/java/org/onosproject/codec/impl/InstructionCodec.java
index 6fa4ae0..f4d5008 100644
--- a/core/common/src/main/java/org/onosproject/codec/impl/InstructionCodec.java
+++ b/core/common/src/main/java/org/onosproject/codec/impl/InstructionCodec.java
@@ -48,6 +48,8 @@
     protected static final String SLOT_GRANULARITY = "slotGranularity";
     protected static final String ETHERNET_TYPE = "ethernetType";
     protected static final String TUNNEL_ID = "tunnelId";
+    protected static final String TCP_PORT = "tcpPort";
+    protected static final String UDP_PORT = "udpPort";
 
     protected static final String MISSING_MEMBER_MESSAGE =
             " member is required in Instruction";