feat(metrics-operator): convert corner cases in SLO convertor

[odubajDT]

Changes

• fix corner cases according to description in support corner cases in SLO convertor function #1986
• unit tests

Fixes: #1986

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[codecov]

Codecov Report

Merging #1999 (712820d) into main (c6958fd) will increase coverage by 0.26%.
The diff coverage is 94.60%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1999      +/-   ##
==========================================
+ Coverage   84.12%   84.38%   +0.26%     
==========================================
  Files         143      144       +1     
  Lines        9039     9249     +210     
==========================================
+ Hits         7604     7805     +201     
- Misses       1165     1171       +6     
- Partials      270      273       +3     

Files Changed	Coverage Δ
metrics-operator/converter/slo_converter.go	94.30% <94.27%> (-2.23%)	⬇️
metrics-operator/converter/common.go	100.00% <100.00%> (ø)

... and 3 files with indirect coverage changes

Flag	Coverage Δ
certificate-operator	68.55% <ø> (ø)
component-tests	59.89% <ø> (+1.22%)	⬆️
lifecycle-operator	84.92% <ø> (ø)
metrics-operator	87.15% <94.60%> (+0.61%)	⬆️
scheduler	32.12% <ø> (ø)

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.1% Duplication

[thisthat]

Thanks @odubajDT 🙌