Run pre-commit hooks to fix python test imports

[lucacome]

• Removes unused imports in tests
• Adds fixtures and utils folders to move non-tests files from the main folder
• Re-orders dependencies in the requirements files alphabetically
• Fixes whitespaces in a few remaining files

[codecov-commenter]

Codecov Report

Merging #3221 (4291b16) into main (fb6bbeb) will increase coverage by 0.03%.
The diff coverage is 72.72%.

@@            Coverage Diff             @@
##             main    #3221      +/-   ##
==========================================
+ Coverage   52.52%   52.56%   +0.03%     
==========================================
  Files          58       59       +1     
  Lines       16070    16080      +10     
==========================================
+ Hits         8441     8452      +11     
  Misses       7351     7351              
+ Partials      278      277       -1     

Impacted Files	Coverage Δ
internal/certmanager/cm_controller.go	18.04% <ø> (ø)
internal/certmanager/helper.go	100.00% <ø> (ø)
internal/certmanager/sync.go	73.23% <ø> (ø)
internal/configs/version2/template_helper.go	70.00% <70.00%> (ø)
internal/configs/version2/template_executor.go	60.46% <100.00%> (ø)
internal/k8s/configuration.go	95.76% <0.00%> (+0.36%)	⬆️

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[tomasohaodha]

Impossible to review a PR with 511 files changed with just 'Fixes all the formatting in the codebase' as the description. I would suggest either package it to have fewer files per review, or explain in-depth what is being changed so that anomalies can be easily detected (although even then, 511 files is a lot).

[haywoodsh]

Hi @lucacome, should there also be corresponding checks in the CI pipeline for the hooks you added? From what I understand about pre-commit hooks, users can skip them if they choose to. If the same tests don't exist in the CI pipeline, could it be possible that a pull request is merged without passing those commit hooks, and the next developer who pull from the main branch will have have to fix the code themselves?

[lucacome]

@haywoodsh yes there's going to be a check. I've enabled it briefly but it was trying to fix all the files at once instead of fixing only the modified files. I haven't found a way yet to customize the app, so I've disabled it for now.
This PR is basically taking care of all the existing issues so that we can enable the check.

[lucacome]

@tomasohaodha I've opened #3223 to move some of the docs changes there

[tomasohaodha]

It's still showing all the whitespace-changed files. I assume you need to merge #3223 and then run the pre-commit again?

[lucacome]

@tomasohaodha yes just merged main into this branch and also created another PR to take care of whitespaces in tests #3226