feat(operator): introduce retry logic for KeptnTasks

[odubajDT]

Fixes: #64 #667

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[codecov]

Codecov Report

Merging #1088 (11b50a4) into main (8a77f00) will increase coverage by 0.15%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1088      +/-   ##
==========================================
+ Coverage   58.89%   59.05%   +0.15%     
==========================================
  Files         126      126              
  Lines       10007    10023      +16     
==========================================
+ Hits         5894     5919      +25     
+ Misses       3894     3888       -6     
+ Partials      219      216       -3     

Impacted Files	Coverage Δ
...is/lifecycle/v1alpha3/keptntaskdefinition_types.go	100.00% <ø> (ø)
...r/apis/lifecycle/v1alpha3/zz_generated.deepcopy.go	0.00% <ø> (ø)
...perator/apis/lifecycle/v1alpha3/keptntask_types.go	97.59% <100.00%> (+0.12%)	⬆️
operator/controllers/common/taskhandler.go	79.71% <100.00%> (+3.19%)	⬆️
.../controllers/lifecycle/keptntask/function_utils.go	78.18% <100.00%> (+0.40%)	⬆️
...rator/controllers/lifecycle/keptntask/job_utils.go	40.54% <100.00%> (+2.22%)	⬆️

... and 2 files with indirect coverage changes

Flag	Coverage Δ
certificate-operator	64.15% <ø> (ø)
component-tests	60.61% <70.00%> (+0.57%)	⬆️
lifecycle-operator	78.52% <100.00%> (+0.11%)	⬆️
metrics-operator	77.35% <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
0.1% Duplication