feat: add global value for imagePullPolicy

[prakrit55]

Description

• imagePullPolicy can be used in main chart which will supersede the sub charts
• _helpers.tpl has been adapted
• global value is referenced in all subcharts
• tests are adjusted to verify that the new global value works

Fixes #2362

How to test

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• Manual Test A
• Unit Test B
• Integration Test C

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• My PR fulfills the Definition of Done of the corresponding issue and not more (or parts if the issue is separated
  into multiple PRs)
• I used descriptive commit messages to help reviewers understand my thought process
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• I regenerated the auto-generated docs for Helm and the CRD documentation (if applicable)
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• New and existing unit and integration tests pass locally with my changes

Summary

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Fixes # (issue)

Checks

• My PR fulfills the Definition of Done of the corresponding issue and not more (or parts if the issue is separated
  into multiple PRs)
• I used descriptive commit messages to help reviewers understand my thought process
• I signed off all my commits according to the Developer Certificate of Origin (DCO)(
  see Contribution Guide)
• My PR title is formatted according to the semantic PR conventions described in
  the Contribution Guide
• My content follows the style guidelines of this project (YAMLLint, markdown-lint)
• I regenerated the auto-generated docs for Helm and the CRD documentation (if applicable)
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  from the Netlify deploy preview
• My changes result in all-green PR checks (first-time contributors need to ask a maintainer to approve their test runs)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ce57993) 85.75% compared to head (a2e9a03) 86.77%.
Report is 59 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2807      +/-   ##
==========================================
+ Coverage   85.75%   86.77%   +1.02%     
==========================================
  Files         162      162              
  Lines       10351     8554    -1797     
==========================================
- Hits         8876     7423    -1453     
+ Misses       1186      841     -345     
- Partials      289      290       +1     

see 139 files with indirect coverage changes

Flag	Coverage Δ
certificate-operator	69.23% <ø> (+1.80%)	⬆️
component-tests	56.64% <ø> (+0.64%)	⬆️
keptn-lifecycle-operator	?
lifecycle-operator	86.40% <ø> (+1.11%)	⬆️
metrics-operator	88.32% <ø> (+0.68%)	⬆️
scheduler	34.74% <ø> (-1.79%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

[mowies]

@prakrit55 I updated all helm charts to the new common chart version that includes your changes: #2831

[RealAnna]

@prakrit55 please regenerate the helm chart documentation using the script under .github/scripts folder

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[prakrit55]

@prakrit55 please regenerate the helm chart documentation using the script under .github/scripts folder

ahh yess, forgot that

[odubajDT]

I think the more specific imagePullPolicy for the component should take precedence over the globally set value. In the current setup the global one takes precedence

[prakrit55]

I think the more specific imagePullPolicy for the component should take precedence over the globally set value. In the current setup the global one takes precedence

In that case, I thing we need to change
https://github.com/keptn/lifecycle-toolkit-charts/blob/821ad3dfa4c259d8fa2ba0e439f8bf8dd7064021/charts/common/templates/_images.tpl#L66

Creating another pr in the lifecycle-toolkit-charts
CC @mowies

need to verify why the values order is not respected

fixed

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud