feat: Kustomize ignore components - issues/18634

[bradkwadsworth]

Added ability to ignore Kustomize component directory if it does not exist. A new field called ignoreMissingComponents, if enabled, will verify if a given components directory exists and if not will log a debug message. Only found component directories will be used if ignoreMissingComponents is set to true.

Fixes #18634

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
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[codecov]

Codecov Report

Attention: Patch coverage is 78.57143% with 6 lines in your changes missing coverage. Please review.

Project coverage is 55.54%. Comparing base (b4a63ae) to head (871338b).

Files with missing lines	Patch %	Lines
util/kustomize/kustomize.go	78.57%	2 Missing and 1 partial ⚠️
cmd/util/app.go	66.66%	2 Missing ⚠️
cmd/argocd/commands/app.go	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21674      +/-   ##
==========================================
- Coverage   55.59%   55.54%   -0.06%     
==========================================
  Files         340      340              
  Lines       57419    57445      +26     
==========================================
- Hits        31924    31908      -16     
- Misses      22807    22841      +34     
- Partials     2688     2696       +8     

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[crenshaw-dev]

Thanks for the PR! Could you look into adding CLI and UI support for the new flag as part of this PR?

[bradkwadsworth]

I looked in the existing CLI and UI and noticed that neither expose configuring Kustomize Components.

[crenshaw-dev]

@bradkwadsworth I think it probably still makes sense to expose the flag. Maybe not via the UI, but at least via the CLI. I think the code could be modeled off the Helm ignore missing values file equivalent field (assuming that has CLI/UI support, which it might not).

[bradkwadsworth]

I was able to update the CLI, but couldn't find any references for something similar with the helm values files in the web UI. Updated some docs as well.