AnolisOS 更新镜像源

mkdir -p /bak/yum.repos.d;
cp /etc/yum.repos.d/* /bak/yum.repos.d/;
sed -i 's/mirrors.aliyuncs.com/mirrors.openanolis.cn/g' /etc/yum.repos.d/*;
yum clean all;
yum makecache;