Refactor Redis client initialization to support both Sentinel and standalone connections

[nygrenh]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.42%. Comparing base (1f1cf02) to head (36d2c63).
⚠️ Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (1f1cf02) and HEAD (36d2c63). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (1f1cf02)	HEAD (36d2c63)
backend	7	5

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1290      +/-   ##
==========================================
- Coverage   65.18%   59.42%   -5.77%     
==========================================
  Files         142      143       +1     
  Lines        6021     6004      -17     
  Branches     1433     1428       -5     
==========================================
- Hits         3925     3568     -357     
- Misses       1947     2235     +288     
- Partials      149      201      +52     

Flag	Coverage Δ
backend	59.42% <ø> (-5.77%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.