chore(pipeline): wait for Terraform lock to be released

[afeld]

Avoids race condition happening between pipeline runs.

[thekaveman]

This looks great!

Should we have expected to see the pipeline succeed with this PR? Or not until the change makes it into the dev branch?

Edit: seems like the wait was part of the command, but it still failed:

The wait didn't clear the lock

[afeld]

Appears the Terraform lock wasn't released from an operation on 8/22 for some reason. Forced unlock and re-ran the Job, which succeed.

In other words, this pull request seems to have "worked" since it waited two minutes for the lock to be released, but that never happened, so it exited. Why the lock wasn't released before is another question — let me know if you see the pipeline failing at other unexpected times and we can dig in.

[angela-tran]

Why the lock wasn't released before is another question — let me know if you see the pipeline failing at other unexpected times and we can dig in.

🤔 The Azure pipeline started failing again yesterday with the same error about not being able to acquire the lock.

For example, #956 failed (Azure pipeline log)

Other PRs failing:

• https://github.com/cal-itp/benefits/pull/959/checks?check_run_id=8562566924 - Eligibility Confirm: Update copy, add form input helper text #959
• https://github.com/cal-itp/benefits/pull/951/checks?check_run_id=8562291395 - Verifier Selection: Update copy, add link #951