of1.2: make set_metadata implementation consistent with the rest
of1.2: make set_metadata implementation consistent with the rest

Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

fujita/ryu,lsqtongxin/ryu,fujita/ryu,StephenKing/ryu,diogommartins/ryu,iwaseyusuke/ryu,habibiefaried/ryu,citrix-openstack-build/ryu,Tejas-Subramanya/RYU_MEC,habibiefaried/ryu,alanquillin/ryu,lzppp/mylearning,haniehrajabi/ryu,takahashiminoru/ryu,jazzmes/ryu,fkakuma/ryu,sivaramakrishnansr/ryu,umkcdcrg01/ryu_openflow,ntts-clo/ryu,fujita/ryu,yamt/ryu,gareging/SDN_Framework,jkoelker/ryu,lagopus/ryu-lagopus-ext,mikhaelharswanto/ryu,zangree/ryu,alanquillin/ryu,OpenState-SDN/ryu,hisaharu/ryu,zangree/ryu,yamt/ryu,jalilm/ryu,fujita/ryu,habibiefaried/ryu,TakeshiTseng/ryu,Zouyiran/ryu,Tesi-Luca-Davide/ryu,openvapour/ryu,habibiefaried/ryu,fkakuma/ryu,John-Lin/ryu,muzixing/ryu,jalilm/ryu,shinpeimuraoka/ryu,gopchandani/ryu,ysywh/ryu,ysywh/ryu,fkakuma/ryu,alyosha1879/ryu,darjus-amzn/ryu,pichuang/ryu,evanscottgray/ryu,habibiefaried/ryu,gopchandani/ryu,muzixing/ryu,osrg/ryu,gopchandani/ryu,StephenKing/ryu,darjus-amzn/ryu,Tesi-Luca-Davide/ryu,lagopus/ryu-lagopus-ext,alanquillin/ryu,ysywh/ryu,umkcdcrg01/ryu_openflow,ynkjm/ryu,citrix-openstack-build/ryu,takahashiminoru/ryu,ykaneko/ryu,jazzmes/ryu,shinpeimuraoka/ryu,citrix-openstack/build-ryu,ynkjm/ryu,OpenState-SDN/ryu,ntts-clo/ryu,gareging/SDN_Framework,elahejalalpour/ELRyu,osrg/ryu,yamada-h/ryu,zangree/ryu,diogommartins/ryu,zyq001/ryu,iwaseyusuke/ryu,pichuang/ryu,pichuang/ryu,StephenKing/summerschool-2015-ryu,unifycore/ryu,sivaramakrishnansr/ryu,openvapour/ryu,mikhaelharswanto/ryu,muzixing/ryu,John-Lin/ryu,alanquillin/ryu,OpenState-SDN/ryu,ttsubo/ryu,zyq001/ryu,takahashiminoru/ryu,shinpeimuraoka/ryu,alanquillin/ryu,unifycore/ryu,ysywh/ryu,elahejalalpour/ELRyu,StephenKing/summerschool-2015-ryu,iwaseyusuke/ryu,ttsubo/ryu,diogommartins/ryu,ntts-clo/mld-ryu,o3project/ryu-oe,takahashiminoru/ryu,Zouyiran/ryu,OpenState-SDN/ryu,gopchandani/ryu,John-Lin/ryu,evanscottgray/ryu,samrussell/ryu,TakeshiTseng/ryu,yamt/ryu,Tejas-Subramanya/RYU_MEC,openvapour/ryu,torufuru/oolhackathon,gareging/SDN_Framework,elahejalalpour/ELRyu,haniehrajabi/ryu,diogommartins/ryu,darjus-amzn/ryu,lsqtongxin/ryu,shinpeimuraoka/ryu,Zouyiran/ryu,John-Lin/ryu,muzixing/ryu,TakeshiTseng/ryu,yamt/ryu,sivaramakrishnansr/ryu,StephenKing/ryu,lzppp/mylearning,Tejas-Subramanya/RYU_MEC,haniehrajabi/ryu,StephenKing/ryu,elahejalalpour/ELRyu,jazzmes/ryu,elahejalalpour/ELRyu,ysywh/ryu,StephenKing/summerschool-2015-ryu,zyq001/ryu,iwaseyusuke/ryu,lagopus/ryu-lagopus-ext,lzppp/mylearning,hisaharu/ryu,alyosha1879/ryu,StephenKing/summerschool-2015-ryu,umkcdcrg01/ryu_openflow,zangree/ryu,John-Lin/ryu,yamada-h/ryu,Zouyiran/ryu,osrg/ryu,ynkjm/ryu,jalilm/ryu,ntts-clo/mld-ryu,fujita/ryu,Tejas-Subramanya/RYU_MEC,umkcdcrg01/ryu_openflow,pichuang/ryu,OpenState-SDN/ryu,ttsubo/ryu,openvapour/ryu,lzppp/mylearning,StephenKing/summerschool-2015-ryu,gopchandani/ryu,lsqtongxin/ryu,o3project/ryu-oe,alyosha1879/ryu,StephenKing/ryu,lagopus/ryu-lagopus-ext,hisaharu/ryu,castroflavio/ryu,Tejas-Subramanya/RYU_MEC,alyosha1879/ryu,muzixing/ryu,ttsubo/ryu,hisaharu/ryu,lsqtongxin/ryu,openvapour/ryu,torufuru/OFPatchPanel,darjus-amzn/ryu,TakeshiTseng/ryu,sivaramakrishnansr/ryu,citrix-openstack/build-ryu,ynkjm/ryu,torufuru/oolhackathon,zyq001/ryu,castroflavio/ryu,Zouyiran/ryu,TakeshiTseng/ryu,samrussell/ryu,jalilm/ryu,ynkjm/ryu,iwaseyusuke/ryu,osrg/ryu,jkoelker/ryu,darjus-amzn/ryu,zyq001/ryu,umkcdcrg01/ryu_openflow,pichuang/ryu,torufuru/oolhackathon,shinpeimuraoka/ryu,hisaharu/ryu,Tesi-Luca-Davide/ryu,sivaramakrishnansr/ryu,haniehrajabi/ryu,gareging/SDN_Framework,Tesi-Luca-Davide/ryu,fkakuma/ryu,lsqtongxin/ryu,ykaneko/ryu,evanscottgray/ryu,castroflavio/ryu,jalilm/ryu,ttsubo/ryu,zangree/ryu,lagopus/ryu-lagopus-ext,gareging/SDN_Framework,lzppp/mylearning,osrg/ryu,yamt/ryu,takahashiminoru/ryu,jkoelker/ryu,torufuru/OFPatchPanel,haniehrajabi/ryu,diogommartins/ryu,Tesi-Luca-Davide/ryu,fkakuma/ryu