Separate make targets that require elevated privileges

[chofnar]

What type of PR is this?
cleanup

Which issue does this PR fix:
#459

What does this PR do / Why do we need it:
This PR separates the tests that need some sort of privileged execution from the ones that don't by use of new make targets.
This allows running without needing privileges or when they are not available.
Additionally, this PR will now make tests run on every platform (make test was only run on linux && amd64).

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #461 (b27c120) into main (ceb8c8a) will decrease coverage by 0.59%.
The diff coverage is n/a.

❗ Current head b27c120 differs from pull request most recent head 40d46e1. Consider uploading reports for the commit 40d46e1 to get more accurate results

@@            Coverage Diff             @@
##             main     #461      +/-   ##
==========================================
- Coverage   85.00%   84.41%   -0.60%     
==========================================
  Files          52       51       -1     
  Lines       10623    10548      -75     
==========================================
- Hits         9030     8904     -126     
- Misses       1235     1287      +52     
+ Partials      358      357       -1     

Impacted Files	Coverage Δ
pkg/extensions/extensions.go	80.82% <0.00%> (-3.80%)	⬇️
pkg/storage/scrub.go	86.85% <0.00%> (-2.28%)	⬇️
pkg/api/routes.go	74.79% <0.00%> (-2.10%)	⬇️
pkg/storage/storage_fs.go	79.16% <0.00%> (-2.02%)	⬇️
pkg/extensions/sync/sync.go	85.51% <0.00%> (-1.38%)	⬇️
pkg/api/controller.go	91.56% <0.00%> (-0.11%)	⬇️
pkg/api/errors.go	100.00% <0.00%> (ø)
pkg/extensions/scrub/scrub.go

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[rchincha]

lgtm