♻️ Clusters-keeper: renamed ENV variables

[sanderegg]

What do these changes do?

changes in ENVs that went under the radar.

Related issue/s

How to test

Dev Checklist

• No ENV changes or I properly updated ENV (read the instruction)

DevOps Checklist

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codeclimate]

Code Climate has analyzed commit add522b and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #5032 (add522b) into master (125ae0b) will decrease coverage by 5.9%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #5032      +/-   ##
=========================================
- Coverage    88.1%   82.3%    -5.9%     
=========================================
  Files         750    1250     +500     
  Lines       34023   51237   +17214     
  Branches      689    1107     +418     
=========================================
+ Hits        30003   42199   +12196     
- Misses       3863    8806    +4943     
- Partials      157     232      +75     

Flag	Coverage Δ
integrationtests	57.6% <ø> (-7.4%)	⬇️
unittests	81.3% <ø> (-5.2%)	⬇️

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Files	Coverage Δ
.../simcore_service_clusters_keeper/utils/clusters.py	71.7% <ø> (ø)

... and 647 files with indirect coverage changes