travis: Use root user.
travis: Use root user.

methane/PyMySQL,PyMySQL/PyMySQL,jwjohns/PyMySQL,lzedl/PyMySQL,pulsar314/Tornado-MySQL,yeyinzhu3211/PyMySQL,Geoion/Tornado-MySQL,boneyao/PyMySQL,aio-libs/aiomysql,DashaChuk/PyMySQL,lzedl/PyMySQL,nju520/PyMySQL,wraziens/PyMySQL,eibanez/PyMySQL,NunoEdgarGub1/PyMySQL,yeyinzhu3211/PyMySQL,xjzhou/PyMySQL,wraziens/PyMySQL,anson-tang/PyMySQL,eibanez/PyMySQL,mosquito/Tornado-MySQL,MartinThoma/PyMySQL,Ting-y/PyMySQL,modulexcite/PyMySQL,PyMySQL/Tornado-MySQL,pymysql/pymysql,xjzhou/PyMySQL,jheld/PyMySQL