With a seemingly ever growing list of cirrus-cron jobs running on
release branches, there are bound to be some hiccups. Sometimes a lot
of them. Normally any failures require a human to eyeball the logs
and/or manually re-run the job to see if it was simply a flake. This
doesn't take long, but can be distracting and compounds over time.
Attempt to alleviate some maintainer burden by using a new github action
workflow to perform **one** automatic re-run on any failed builds. This
task is scheduled an hour prior to a second failure check, and generation
of notification e-mail for review.
Note: If there are no failures, due to the auto. re-run or luck, no
e-mail is generated. If this proves useful in this repo, I intend to
re-use this workflow for other repo's cirrus-cron jobs.
Signed-off-by: Chris Evich <cevich@redhat.com>
Inline scripts make github-action workflow YAML harder to read/maintain.
Relocate the e-mail formation script to a dedicated file. This also
permits better input-validation and re-use of a common `err()` function.
Signed-off-by: Chris Evich <cevich@redhat.com>
