chromedriver地址：
http://chromedriver.storage.googleapis.com/index.html
https://npm.taobao.org/mirrors/chromedriver/
selenium地址
http://selenium-release.storage.googleapis.com/index.html
Firefox 下载地址
https://download-installer.cdn.mozilla.net/pub/firefox/releases/
geckodriver下载地址
https://npm.taobao.org/mirrors/geckodriver/
Jenkins插件下载地址
http://updates.jenkins-ci.org/download/plugins/