怎么通过单台机子下发命令，比如`tt`给所有集群中的机器，并收集结果

- [x] 我已经在 [issues](https://github.com/alibaba/arthas/issues) 里搜索，没有重复的issue。我用的检索词是 `集群 and (命令 or 下发 or 归集)`

### 环境信息

* `arthas-boot.jar` 或者 `as.sh` 的版本： xxx
* Arthas 版本: xxx
* 操作系统版本: xxx
* 目标进程的JVM版本: xxx
* 执行`arthas-boot`的版本: xxx

### 重现问题的步骤

1. xxx
2. xxx
3. xxx

### 期望的结果

What do you expected from the above steps？

### 实际运行的结果

实际运行结果，最好有详细的日志，异常栈。尽量贴文本。

```
把异常信息贴到这里
```

No source files, tests, or entry points are named. First clarify how a command such as `tt` should be dispatched to every cluster machine, how results and failures are collected, and what existing Arthas deployment or command mechanisms apply; done should include agreed behavior and a documented validation scenario.

Written by the indexing model from the issue text.