Merge pull request #7 from floodlight/master

Pull from floodlight
adding instruction_id type for table feature prop types
adding of_instruction_id_to_object_id
adding instruction_id funcs
removing print statement
adding return statement
fixing bad arg
removing print statements
Merge into master from pull request #213:
Adding unpadded Instruction Ids for ofp_table_features_prop_instructions* (https://github.com/floodlight/loxigen/pull/213)