fix: remove missing 404 bug

[RealAnna]

make sure that metrics operator returns status code in case of error and not empty values

line 3 metrics not there, line 4 metric there but empty

[netlify]

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[codecov]

Codecov Report

Merging #1006 (231de9e) into main (444ba74) will increase coverage by 0.57%.
The diff coverage is 93.33%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1006      +/-   ##
==========================================
+ Coverage   57.38%   57.96%   +0.57%     
==========================================
  Files         119      126       +7     
  Lines        9914    10117     +203     
==========================================
+ Hits         5689     5864     +175     
- Misses       4027     4045      +18     
- Partials      198      208      +10     

Impacted Files	Coverage Δ
metrics-operator/pkg/metrics/server.go	64.88% <93.33%> (-3.92%)	⬇️
...ptnworkloadinstance/reconcile_prepostdeployment.go	81.81% <0.00%> (-9.10%)	⬇️
...ator/controllers/lifecycle/keptntask/controller.go	54.94% <0.00%> (-3.30%)	⬇️
...ollers/lifecycle/keptntaskdefinition/controller.go	92.00% <0.00%> (ø)
...ecycle/v1alpha3/keptnevaluationprovider_webhook.go	0.00% <0.00%> (ø)
.../controllers/lifecycle/keptnworkload/controller.go	67.08% <0.00%> (ø)
...ifecycle/v1alpha3/keptnworkloadinstance_webhook.go	0.00% <0.00%> (ø)
...ifecycle/keptntaskdefinition/reconcile_function.go	72.72% <0.00%> (ø)
...erator/apis/lifecycle/v1alpha3/keptnapp_webhook.go	0.00% <0.00%> (ø)
... and 7 more

Flag	Coverage Δ
certificate-operator	64.15% <ø> (ø)
lifecycle-operator	53.63% <ø> (ø)
metrics-operator	62.55% <93.33%> (-0.44%)	⬇️
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