ofp_handler: Remove sending SET_CONFIG message
ofp_handler: Remove sending SET_CONFIG message

Because Ryu always sends SET_CONFIG message when a datapath connecting,
the switch configurations of user applications will be overwritten by
the default values of Ryu when the datapath re-connecting.

This patch removes sending SET_CONFIG message from ofp_handler and
avoids this problem.

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

takahashiminoru/ryu,OpenState-SDN/ryu,alanquillin/ryu,zangree/ryu,shinpeimuraoka/ryu,shinpeimuraoka/ryu,lagopus/ryu-lagopus-ext,gareging/SDN_Framework,Tejas-Subramanya/RYU_MEC,osrg/ryu,Tejas-Subramanya/RYU_MEC,takahashiminoru/ryu,osrg/ryu,fkakuma/ryu,iwaseyusuke/ryu,TakeshiTseng/ryu,zangree/ryu,Tejas-Subramanya/RYU_MEC,lagopus/ryu-lagopus-ext,pichuang/ryu,alanquillin/ryu,fkakuma/ryu,gareging/SDN_Framework,takahashiminoru/ryu,osrg/ryu,alanquillin/ryu,Zouyiran/ryu,habibiefaried/ryu,Zouyiran/ryu,gareging/SDN_Framework,fujita/ryu,fkakuma/ryu,TakeshiTseng/ryu,fujita/ryu,OpenState-SDN/ryu,OpenState-SDN/ryu,hisaharu/ryu,lagopus/ryu-lagopus-ext,osrg/ryu,pichuang/ryu,pichuang/ryu,lagopus/ryu-lagopus-ext,fujita/ryu,Zouyiran/ryu,TakeshiTseng/ryu,OpenState-SDN/ryu,hisaharu/ryu,fkakuma/ryu,osrg/ryu,TakeshiTseng/ryu,iwaseyusuke/ryu,habibiefaried/ryu,habibiefaried/ryu,gareging/SDN_Framework,iwaseyusuke/ryu,Tejas-Subramanya/RYU_MEC,Zouyiran/ryu,habibiefaried/ryu,OpenState-SDN/ryu,habibiefaried/ryu,lagopus/ryu-lagopus-ext,shinpeimuraoka/ryu,hisaharu/ryu,Zouyiran/ryu,fkakuma/ryu,pichuang/ryu,alanquillin/ryu,alanquillin/ryu,shinpeimuraoka/ryu,hisaharu/ryu,iwaseyusuke/ryu,TakeshiTseng/ryu,takahashiminoru/ryu,fujita/ryu,shinpeimuraoka/ryu,iwaseyusuke/ryu,zangree/ryu,pichuang/ryu,Tejas-Subramanya/RYU_MEC,zangree/ryu,gareging/SDN_Framework,zangree/ryu,takahashiminoru/ryu,fujita/ryu,hisaharu/ryu