ofproto_v1_5_parser: Add OFPGroupProp support
ofproto_v1_5_parser: Add OFPGroupProp support

OpenFlow Spec 1.5 introduces group property to extend groups.

This patch add group property support.

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

OpenState-SDN/ryu,zangree/ryu,shinpeimuraoka/ryu,lagopus/ryu-lagopus-ext,lagopus/ryu-lagopus-ext,Tejas-Subramanya/RYU_MEC,iwaseyusuke/ryu,alanquillin/ryu,shinpeimuraoka/ryu,iwaseyusuke/ryu,shinpeimuraoka/ryu,fujita/ryu,habibiefaried/ryu,StephenKing/ryu,iwaseyusuke/ryu,fkakuma/ryu,diogommartins/ryu,fujita/ryu,lagopus/ryu-lagopus-ext,TakeshiTseng/ryu,Zouyiran/ryu,OpenState-SDN/ryu,hisaharu/ryu,pichuang/ryu,fujita/ryu,Tejas-Subramanya/RYU_MEC,gareging/SDN_Framework,TakeshiTseng/ryu,darjus-amzn/ryu,osrg/ryu,elahejalalpour/ELRyu,Tejas-Subramanya/RYU_MEC,takahashiminoru/ryu,fkakuma/ryu,diogommartins/ryu,darjus-amzn/ryu,darjus-amzn/ryu,TakeshiTseng/ryu,elahejalalpour/ELRyu,habibiefaried/ryu,osrg/ryu,John-Lin/ryu,Zouyiran/ryu,elahejalalpour/ELRyu,zyq001/ryu,gareging/SDN_Framework,osrg/ryu,OpenState-SDN/ryu,pichuang/ryu,zyq001/ryu,hisaharu/ryu,StephenKing/ryu,alanquillin/ryu,StephenKing/ryu,OpenState-SDN/ryu,shinpeimuraoka/ryu,zangree/ryu,gareging/SDN_Framework,fkakuma/ryu,Zouyiran/ryu,habibiefaried/ryu,ttsubo/ryu,takahashiminoru/ryu,alanquillin/ryu,ttsubo/ryu,zyq001/ryu,habibiefaried/ryu,fkakuma/ryu,TakeshiTseng/ryu,iwaseyusuke/ryu,habibiefaried/ryu,alanquillin/ryu,pichuang/ryu,gareging/SDN_Framework,Zouyiran/ryu,Zouyiran/ryu,osrg/ryu,diogommartins/ryu,iwaseyusuke/ryu,hisaharu/ryu,pichuang/ryu,gareging/SDN_Framework,alanquillin/ryu,lagopus/ryu-lagopus-ext,darjus-amzn/ryu,ttsubo/ryu,zangree/ryu,StephenKing/ryu,elahejalalpour/ELRyu,OpenState-SDN/ryu,ttsubo/ryu,John-Lin/ryu,elahejalalpour/ELRyu,TakeshiTseng/ryu,John-Lin/ryu,lagopus/ryu-lagopus-ext,ttsubo/ryu,zangree/ryu,pichuang/ryu,fujita/ryu,diogommartins/ryu,diogommartins/ryu,fujita/ryu,John-Lin/ryu,zyq001/ryu,hisaharu/ryu,shinpeimuraoka/ryu,takahashiminoru/ryu,Tejas-Subramanya/RYU_MEC,Tejas-Subramanya/RYU_MEC,zangree/ryu,John-Lin/ryu,zyq001/ryu,StephenKing/ryu,takahashiminoru/ryu,darjus-amzn/ryu,hisaharu/ryu,fkakuma/ryu,osrg/ryu,takahashiminoru/ryu