feat(integrations): Add support for celery-redbeat cron tasks

[kwigley]

This add support for celery-redbeat (resolves #2616). Thanks to #2616 (comment)

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[sentrivana]

Thanks a lot @kwigley! We will take a look.

[sentrivana]

Hey @kwigley, sorry for the wait.

I've tried the PR but it doesn't work for me -- did it work for you? As far as I can tell the problem is we attempt to patch the RedBeatScheduler class, but we're not patching it in the right place or at the right time, because when I run this, only the original maybe_due is called, but not our wrapped one. Lmk if the code worked for you as is -- in that case it might be something with my setup.

[sentrivana]

Ok it was a problem with my setup (and our docs :) ) -- I'm getting monitors now. Will give the PR one more look but looks good at first glance!

[kwigley]

Ok it was a problem with my setup (and our docs :) ) -- I'm getting monitors now. Will give the PR one more look but looks good at first glance!

ah, missed your previous comment. Sounds good! lmk if you need anything else

[sentrivana]

@kwigley All good, no action needed on your end, this is good to merge. Thank you!