jenkins更换国内插件源
sed -i 's/https:\/\/updates.jenkins.io\/download/https:\/\/mirrors.tuna.tsinghua.edu.cn\/jenkins/g' default.json
sed -i 's/www.google.com/www.baidu.com/g' default.json
https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json
重启Jenkins