Fix/1442 domain specific s3 in engine

[markostreich]

Description

• Fixes wrong order of S3 configurations in the engine.
• Removes redundant properties from the S3 integration service.

Reference

Issues: #1442

Screenshots (If UI changed)

Check-List

• All Acceptance criteria of user story are met
• Accessibility was considered and tested (On UI Change)
• JUnit tests are written (60% CodeCov)
• Internal Review is maintained
• Documentations external and internal are completed
• Smoketest successful (Manual E2E-Test depending on Change)
• No waste on Branch left (e.g. console.logs)
• Board is up-to-date
• Internal Services / Artifacts updated (Depending on Change - See Dependency Graph
• Openshift environments are prepared (Secrets, etc.) and release-issue is maintained

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.47%. Comparing base (bbe03db) to head (c5951b4).
Report is 3 commits behind head on dev.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #1769      +/-   ##
============================================
+ Coverage     44.51%   45.47%   +0.96%     
- Complexity     1707     1752      +45     
============================================
  Files           658      659       +1     
  Lines          9620     9795     +175     
  Branches        484      497      +13     
============================================
+ Hits           4282     4454     +172     
- Misses         5153     5155       +2     
- Partials        185      186       +1     

Flag	Coverage Δ
unittests	45.47% <ø> (+0.96%)	⬆️

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