Add DSN test
Add DSN test

cxflag203/mysql,jockchou/mysql,Frca/mysql,eklitzke/mysql,wfxiang08/mysql,helight/helight_code,helight/helight_code,VividCortex/mysql,joshuaprunier/mysql,chinanjjohn2012/mysql,methane/mysql,yonglehou/mysql,tmulchay/mysql,helight/helight_code,LightKool/mysql-go,yyljlyy/mysql,aperera/mysql,hgfischer/mysql,dalinaum/go-mysql-driver,Vorstack/mysql,roth1002/mysql,sunjian1/mysql,rafaeljusto/mysql,LightKool/mysql-go,nanata1115/mysql,bookerzzz/mysql,VividCortex/mysql,beego/mysql,helight/helight_code,siriele/mysql,helight/helight_code,Freeaqingme/golang-sql-driver-mysql,methane/mysql,henrylee2cn/mysql,go-sql-driver/mysql,rlowe/mysql,helight/helight_code,zhgo/mysql,Go-SQL-Driver/MySQL,helight/helight_code,segmentio/mysql,segmentio/mysql,hebihui/mysql,bookerzzz/mysql,helight/helight_code,springning/mysql,netroby/mysql,muthusubbu459/mysql,helight/helight_code,eXcomm/gomysql,cw2018/mysql,hyperworks/mysql