fix(operator): refactored metric adapter for helm generation

[RealAnna]

Signed-off-by: realanna anna.reale@dynatrace.com

[codecov]

Codecov Report

Merging #725 (9fb3bbb) into main (8cfb221) will increase coverage by 0.09%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #725      +/-   ##
==========================================
+ Coverage   57.35%   57.44%   +0.09%     
==========================================
  Files          89       89              
  Lines        7011     7012       +1     
==========================================
+ Hits         4021     4028       +7     
+ Misses       2823     2819       -4     
+ Partials      167      165       -2     

Impacted Files	Coverage Δ
operator/cmd/metrics/adapter/provider/provider.go	81.81% <100.00%> (+0.16%)	⬆️
...lers/lifecycle/keptnworkloadinstance/controller.go	82.80% <0.00%> (+1.35%)	⬆️
...ptnworkloadinstance/reconcile_prepostevaluation.go	90.90% <0.00%> (+9.09%)	⬆️

Flag	Coverage Δ
component-tests	53.95% <ø> (+0.69%)	⬆️
keptn-lifecycle-operator	53.10% <100.00%> (+<0.01%)	⬆️
klt-cert-manager	67.50% <ø> (ø)
scheduler	21.17% <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
0.0% Duplication