test: disable rpc unittest with large file for now
test: disable rpc unittest with large file for now

disable the rpc unittest with large file for now because it doesn't
work with eventlet 0.18 and later. Ryu doesn't have any use cases like
this test but should be investigated.

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

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