[Feature] 在部署的时候优化并行部署多台主机

### Description / 功能描述

如图：

我想要将泛域名证书上传到 10 机台的远程主机上。那就要建十几个并行的步骤，是不是可以在部署那个地方，允许同时多台远程主机同时部署？

### Motivation / 请求动机

同时将证书部署到多台远程主机上。

### Miscellaneous / 其他

_No response_

### Contribution / 贡献代码

- [ ] I am interested in contributing a PR for this! / 我乐意为此提交代码并发起 PR！

No files, tests, or entry points are named. Start by tracing the deployment workflow and how remote hosts are represented, then determine where one deployment could fan out to multiple hosts safely. Done means a wildcard certificate can be deployed to several remote hosts concurrently without requiring separate parallel steps.

Written by the indexing model from the issue text.