feat(metrics-operator): introduce SLO -> AnalysisDefinition converter

[odubajDT]

Changes

• introduced convertor for SLO files
• unit tests
• converter is part of metrics-operator binary under --convert-slo flag

Usage

./metrics-operator --convert-slo=slo.yaml --slo-namespace=default --definition=defname

Missing pieces

• There is need to cover the cases when multiple criteria have logical AND operator in between them, see TODOs in setupTarget function and here for more information

Part-of: #1760

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[codecov]

Codecov Report

Merging #1955 (3d8163c) into main (75baefd) will increase coverage by 0.38%.
The diff coverage is 96.53%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1955      +/-   ##
==========================================
+ Coverage   83.86%   84.25%   +0.38%     
==========================================
  Files         142      143       +1     
  Lines        8845     9018     +173     
==========================================
+ Hits         7418     7598     +180     
+ Misses       1160     1154       -6     
+ Partials      267      266       -1     

Files Changed	Coverage Δ
...-operator/api/v1alpha3/analysisdefinition_types.go	100.00% <ø> (ø)
metrics-operator/converter/slo_converter.go	96.53% <96.53%> (ø)

... and 3 files with indirect coverage changes

Flag	Coverage Δ
certificate-operator	68.55% <ø> (ø)
component-tests	59.68% <ø> (+1.43%)	⬆️
lifecycle-operator	84.92% <ø> (ø)
metrics-operator	86.39% <96.53%> (+0.99%)	⬆️
scheduler	32.12% <ø> (ø)

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
5 Code Smells

No Coverage information
0.1% Duplication