import_error_alert_emails

[jharner11235]

This adds functionality to notify a list of emails if a dag fails to import, and uses a variable in airflow.cfg to assign emails to be notified (instead of attempting to parse a broken dag for emails, which may at times be unviable)

closes: #10968

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[jharner11235]

I'm looking for some guidance in how to apply tests, I've yet to do any testing whatsoever near the scale present here and am quite lost.

And of course, anything goes on the already-written code as well :) happy to make any changes seen fit

[ephraimbuddy]

I don't think it's cool to get alerts of broken dags every 5mins? WDYT @jharner11235

[jharner11235]

I don't think it's cool to get alerts of broken dags every 5mins? WDYT @jharner11235

I didn't get an alert every 5 minutes in any of my testing, given where the changes are made if alerts were being sent every 5mins then alerts would also be inserted into the database every 5mins, and I didn't see that occurring either

Edit: I'm currently testing again to verify, as well as addressing the now-failing checks. I also changed the default to be False, it doesn't make sense to have notifications defaulted to True if a user has to add their email in order to get emails (even though it uses SMTP to message if available)

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed in 5 days if no further activity occurs. Thank you for your contributions.