ofctl_rest: Adopt decorator to simplify
ofctl_rest: Adopt decorator to simplify

Signed-off-by: IWASE Yusuke <bb80e84cc9f5a8f01385872ee89032beb5d4eba7@gmail.com>
Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

Tejas-Subramanya/RYU_MEC,shinpeimuraoka/ryu,iwaseyusuke/ryu,Tejas-Subramanya/RYU_MEC,pichuang/ryu,lagopus/ryu-lagopus-ext,osrg/ryu,pichuang/ryu,TakeshiTseng/ryu,pichuang/ryu,fujita/ryu,gareging/SDN_Framework,Tejas-Subramanya/RYU_MEC,zangree/ryu,osrg/ryu,hisaharu/ryu,shinpeimuraoka/ryu,iwaseyusuke/ryu,hisaharu/ryu,osrg/ryu,lagopus/ryu-lagopus-ext,zangree/ryu,iwaseyusuke/ryu,osrg/ryu,Tejas-Subramanya/RYU_MEC,Tejas-Subramanya/RYU_MEC,TakeshiTseng/ryu,fkakuma/ryu,zangree/ryu,hisaharu/ryu,gareging/SDN_Framework,lagopus/ryu-lagopus-ext,fkakuma/ryu,zangree/ryu,pichuang/ryu,gareging/SDN_Framework,fujita/ryu,shinpeimuraoka/ryu,hisaharu/ryu,hisaharu/ryu,fujita/ryu,fkakuma/ryu,shinpeimuraoka/ryu,gareging/SDN_Framework,iwaseyusuke/ryu,iwaseyusuke/ryu,lagopus/ryu-lagopus-ext,fkakuma/ryu,fujita/ryu,gareging/SDN_Framework,pichuang/ryu,shinpeimuraoka/ryu,TakeshiTseng/ryu,TakeshiTseng/ryu,fujita/ryu,zangree/ryu,TakeshiTseng/ryu,fkakuma/ryu,lagopus/ryu-lagopus-ext,osrg/ryu