[osc] 与 OSChina 接入工作

[Jimmy Chu]

1. 显示应用状态的接口
2. 日志下载接口
3. 日志查看限制行数，500或者1000
4. 部署接口超时无响应
5. 服务添加失败要返回详情而不是 500

[Jimmy Chu]

Issue #23 was marked as a duplicate of this issue.

[LiAh Sheep]

Can close? @jimmychu0807