chore(scheduler): added new scheduler tests

[RealAnna]

Closes #317

• Adds a few tests in the scheduler to cover labels and pending status in case of failure.

notes:

eventually, when there will be compatibility between the libraries this test will be merged with operator in a proper e2e tests

[codecov]

Codecov Report

Merging #634 (42bf0ac) into main (c5463c6) will increase coverage by 0.54%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #634      +/-   ##
==========================================
+ Coverage   54.23%   54.78%   +0.54%     
==========================================
  Files          77       78       +1     
  Lines        6446     6515      +69     
==========================================
+ Hits         3496     3569      +73     
+ Misses       2799     2796       -3     
+ Partials      151      150       -1     

Impacted Files	Coverage Δ
operator/controllers/common/taskhandler.go	78.78% <0.00%> (-0.93%)	⬇️
operator/controllers/common/phasehandler.go	81.25% <0.00%> (-0.57%)	⬇️
operator/webhooks/pod_mutating_webhook.go	35.83% <0.00%> (ø)
operator/controllers/common/helperfunctions.go	100.00% <0.00%> (ø)
operator/controllers/common/evaluationhandler.go	79.71% <0.00%> (ø)
operator/apis/lifecycle/v1alpha2/common/phases.go	100.00% <0.00%> (ø)
...rator/controllers/lifecycle/keptnapp/controller.go	68.42% <0.00%> (ø)
...rator/controllers/lifecycle/keptntask/job_utils.go	38.31% <0.00%> (ø)
...ontrollers/lifecycle/keptnevaluation/controller.go	0.00% <0.00%> (ø)
...or/controllers/lifecycle/interfaces/eventobject.go	62.50% <0.00%> (ø)
... and 8 more

Flag	Coverage Δ
component-tests	53.74% <ø> (+1.29%)	⬆️
keptn-cert-manager	67.72% <ø> (ø)
keptn-lifecycle-operator	52.13% <ø> (+0.53%)	⬆️
scheduler	21.17% <ø> (ø)

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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0 Vulnerabilities
0 Security Hotspots
0 Code Smells

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