Use -s param instead of "partial: ..." to generate partial manifests using Helm

[0sewa0]

Description

K8S-9602

We want to generate only given parts of our Helm-chart for the release, and we used to do it by setting a "secret" param called partial, which led to a very overcomplicated and confusing logic.

I replaced it with using the -s (--show-only) in the makefiles instead.
official docu:

 -s, --show-only stringArray                      only show manifests rendered from the given templates

Sidenote: I tried to make it "prettier" by trying not to list each CSI-related file 1-by-1, but didn't find a way (it's not pretty, but still much prettier than partial) -> 6d72c07

How can this be tested?

Try out all helm/manifests related commands 😅 (no change in behaviour should be expected)
(Important to check not only the directly touched make commands, because all yaml files were touched do to the removal of the partial check)

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.30%. Comparing base (80011e5) to head (23a20dc).

❗ Current head 23a20dc differs from pull request most recent head f52a094

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3384   +/-   ##
=======================================
  Coverage   58.30%   58.30%           
=======================================
  Files         334      334           
  Lines       18686    18686           
=======================================
  Hits        10895    10895           
  Misses       6567     6567           
  Partials     1224     1224           

Flag	Coverage Δ
unittests	58.30% <ø> (ø)

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[albertogdd]

Everything else LGTM