fix(telemetry): zero value for cloud source telemetry

[stehessel]

Description

Make sure to count non-existing cloud source types as zero in telemetry. Otherwise we'll get undefined values, which does not look as nice in the telemetry charts.

User-facing documentation

• CHANGELOG is updated OR update is not needed
• documentation PR is created and is linked above OR is not needed

Testing and quality

• the change is production ready: the change is GA or otherwise the functionality is gated by a feature flag
• CI results are inspected

Automated testing

• added unit tests
• added e2e tests
• added regression tests
• added compatibility tests
• modified existing tests

How I validated my change

change me!

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[rhacs-bot]

Images are ready for the commit at 801fa6d.

To use with deploy scripts, first export MAIN_IMAGE_TAG=4.7.x-512-g801fa6dc50.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.88%. Comparing base (36b7306) to head (801fa6d).
Report is 21 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #13957      +/-   ##
==========================================
+ Coverage   48.84%   48.88%   +0.03%     
==========================================
  Files        2496     2496              
  Lines      180751   180746       -5     
==========================================
+ Hits        88289    88351      +62     
+ Misses      85446    85378      -68     
- Partials     7016     7017       +1     

Flag	Coverage Δ
go-unit-tests	48.88% <100.00%> (+0.03%)	⬆️

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