Ensure unwrap client uses client config if available

[lkubb]

What does this PR do?

Ensures the unwrap client uses client config if available. Also cleans up unnecessary Pylint pragmas in a second commit.

What issues does this PR fix or reference?

Fixes: #95

Previous Behavior

When unwrapping authentication credentials without having a preexisting cached configuration, the unwrap requests would not respect the vault:client configuration.

New Behavior

Works as expected.

Merge requirements satisfied?

[NOTICE] Bug fixes or features added to Salt require tests.

• Docs
• Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html
• Tests written/updated

Commits signed with GPG?

Yes

[codecov]

Codecov Report

Attention: Patch coverage is 89.02439% with 18 lines in your changes missing coverage. Please review.

Project coverage is 90.78%. Comparing base (a3fd387) to head (585bc52).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
tests/unit/utils/vault/test_factory.py	80.88%	8 Missing and 5 partials ⚠️
tests/unit/utils/vault/conftest.py	81.48%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #96      +/-   ##
==========================================
- Coverage   90.83%   90.78%   -0.06%     
==========================================
  Files          77       77              
  Lines       13098    13147      +49     
  Branches     1215     1219       +4     
==========================================
+ Hits        11898    11935      +37     
- Misses        945      953       +8     
- Partials      255      259       +4     

Flag	Coverage Δ
Linux	90.70% <89.02%> (-0.06%)	⬇️
macOS	66.40% <89.02%> (+0.03%)	⬆️
project	80.32% <100.00%> (+0.04%)	⬆️
py310	90.73% <89.02%> (-0.06%)	⬇️
py39	85.60% <89.02%> (-0.06%)	⬇️
salt_3006_9	85.68% <89.02%> (-0.04%)	⬇️
salt_3007_1	90.69% <89.02%> (-0.05%)	⬇️
tests	96.04% <88.88%> (-0.14%)	⬇️

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