Merge pull request #338 from leoliang/master

手机和团购迁移中遇到的bug fix
Merge pull request #339 from leoliang/master

refactor
Merge pull request #340 from leoliang/master

add rsponse-content for directive return
Merge pull request #341 from leoliang/master

bug fix
Merge pull request #343 from leoliang/master

增加common规则处理
Merge pull request #344 from leoliang/master

新增more_clear_headers
由于大小写问题，prefix在生成config时，改为regex
修复agentId重复的bug，每个agent都使用唯一的id
Merge pull request #345 from atellwu/softbalance

Softbalance 批量更新
动态修改upstream的name加上vs前缀