parse dns_servre in config (#739)
parse dns_servre in config (#739)

thx
vanish87/shadowsocks,ufownl/shadowsocks,shell909090/shadowsocks,kcyeu/shadowsocks,vanish87/shadowsocks,falseen/shadowsocks,michalliu/shadowsocks,Rand01ph/shadowsocks,bwinhwang/shadowsocks,hjhjw1991/shadowsocks,warmchang/shadowsocks,liamchzh/shadowsocks,kimw/shadowsocks,michaelhe/shadowsocks,xjz19901211/shadowsocks,ufownl/shadowsocks,kcyeu/shadowsocks,lasting-yang/shadowsocks,Rand01ph/shadowsocks,michalliu/shadowsocks,catinred2/shadowsocks,bwinhwang/shadowsocks,kimw/shadowsocks,CasparLi/shadowsocks,falseen/shadowsocks,catinred2/shadowsocks,warmchang/shadowsocks,shell909090/shadowsocks,hjhjw1991/shadowsocks,xjz19901211/shadowsocks,CasparLi/shadowsocks,lasting-yang/shadowsocks,liamchzh/shadowsocks,michaelhe/shadowsocks