Add input port as additional field for packet hash computation

src/main/java/net/floodlightcontroller/packet/Ethernet.java

...java/net/floodlightcontroller/routing/ForwardingBase.java

src/main/python/PythonClient.pyc

src/main/python/PythonServer.pyc

src/main/python/compileall.pyc

src/main/python/debugserver.pyc