Allow Remote Execution on Jobs

[sunguroku]

Location

• [ ] Browser
• [x] CLI
• [x] API

Requirements

It should be possible to run remote execution on Jobs. porter run [JOB_NAME] -- [COMMAND] should execute on the main pod (not the sidecar one).

Additional Details

This would need extra care on implementing graceful exit/error when the job completes and the pod disappears while remote execution is happening.