Add functionality to send a slack message if there

[radumas]

Per this SO post it's possible to get the return value from a BashOperator. The return value should modify what message Slack sends. There are a few non-critical the script will log that won't kill the program. These should bubble to some final sys.exit() call which would trigger a Slack message to notify that the data pipeline encountered a weird issue.

[radumas]

Kind of wondering if I should make these unusual errors fail it instead.

[Nate-Wessel]

If there what?

[radumas]

are non-critical errors

[radumas]

Wow I was really allergic to writing "errors" when I wrote the issue title and description. Updated.

[radumas]

This has been dealt with in the splitting the BashOperator into python tasks