ofproto_v1_4_parser: Move utility method to OFPPropBase
ofproto_v1_4_parser: Move utility method to OFPPropBase

The backport from ofproto_v1_5_parser: This patch moves get_rest()
and serialize() from OFPTableFeatureProp to OFPPropBase in order
to share it with other subclass.

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

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