fix(ci): Show logs after each Google Cloud test job

[teor2345]

Motivation

PR #5330 stopped showing any test logs in Google Cloud test runs that use the ssh-compute action.

But we need those logs to diagnose test failures.

Solution

Add a step that shows the logs after each time we run ssh-compute

Review

This PR is urgent because we need to be able to diagnose google cloud failures.

Reviewer Checklist

• Will the PR name make sense to users?
  • Does it need extra CHANGELOG info? (new features, breaking changes, large changes)
• Are the PR labels correct?
• Does the code do what the ticket and PR says?
• How do you know it works? Does it have tests?

[teor2345]

I think we're running into the 1 MB step output limit here:
https://github.com/ZcashFoundation/zebra/actions/runs/3200985566/jobs/5228636615

Longer-term, we could use log artifacts:
https://docs.github.com/en/actions/using-workflows/storing-workflow-data-as-artifacts
Or modify the ssh-compute GitHub action so it shows the SSH output.

[teor2345]

google-github-actions/ssh-compute#29

[teor2345]

Failed with:

Error: Unable to locate the previous sha: de3640d
Error: You seem to be missing 'fetch-depth: 0' or 'fetch-depth: 2'. See https://github.com/tj-actions/changed-files#usage

https://github.com/ZcashFoundation/zebra/actions/runs/3203562017/jobs/5233804843#step:3:97

[teor2345]

@Mergifyio update

[mergify]

update

✅ Branch has been successfully updated

[teor2345]

Failed with:

ERROR: (gcloud.compute.start-iap-tunnel) Error while connecting [4010: 'destination read failed'].
kex_exchange_identification: Connection closed by remote host

This is #5362

[dconnolly]

tee hee | tail

[gustavovalverde]

Superseded by #5367