test: Add initial e2e tests for outliers

[maikelarabori]

Adds some initial e2e tests for the analytics outliers API.
It covers some random positive scenarios and one negative.

[codecov]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (34da9f9) 66.47% compared to head (1c9ade4) 66.47%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #16098      +/-   ##
============================================
- Coverage     66.47%   66.47%   -0.01%     
  Complexity    31601    31601              
============================================
  Files          3508     3508              
  Lines        130768   130769       +1     
  Branches      15253    15254       +1     
============================================
  Hits          86930    86930              
- Misses        36761    36762       +1     
  Partials       7077     7077              

Flag	Coverage Δ
integration	50.27% <0.00%> (-0.01%)	⬇️
integration-h2	32.52% <0.00%> (-0.01%)	⬇️
unit	30.37% <0.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
...utlier/service/AnalyticsZScoreOutlierDetector.java	2.85% <0.00%> (-0.09%)	⬇️

... and 2 files with indirect coverage changes

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[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud