插件：
【Build with Parameters】:https://wiki.jenkins-ci.org/display/JENKINS/Build+With+Parameters+Plugin
【Extended Choice Parameter】:https://wiki.jenkins-ci.org/display/JENKINS/Extended+Choice+Parameter+plugin
基于参数化构建可以做很多事情，比如实现项目自动部署之后的版本回滚：http://www.cnblogs.com/EasonJim/p/5945266.html