[Fixes #13437] Migration from RabbitMQ + django-celery-results to Redis

[Gpetrak]

This PR was created according to this issue #13437

Checklist

Reviewing is a process done by project maintainers, mostly on a volunteer basis. We try to keep the overhead as small as possible and appreciate if you help us to do so by completing the following items. Feel free to ask in a comment if you have troubles with any of them.

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Submitting the PR does not require you to check all items, but by the time it gets merged, they should be either satisfied or inapplicable.

[codecov]

Codecov Report

❌ Patch coverage is 83.03109% with 262 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.78%. Comparing base (e132e0f) to head (3612608).
⚠️ Report is 21 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #13438      +/-   ##
==========================================
+ Coverage   73.54%   73.78%   +0.23%     
==========================================
  Files         917      922       +5     
  Lines       53261    54296    +1035     
  Branches     6066     6183     +117     
==========================================
+ Hits        39172    40063     +891     
- Misses      12523    12636     +113     
- Partials     1566     1597      +31     

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[Gpetrak]

This PR includes the changes of this PR: #13494