Spencer Wightman

@exodia0x This looks like a good use case for [processor](https://www.artillery.io/docs/reference/test-script#processor---custom-js-code): extract the bulk of scenario logic from YAML to a JS file, which can be used to construct complicated scenarios...

I would also like to include a message in the report. I'll take a crack at implementing it.

I would be happy to work on this. @hassy if you think it is worthwhile, will you please assign me? I previously made PR #2348.