[OSD-20024] Add test case for GetRestConfigAsUser

[Tof1973]

What type of PR is this?

test

What this PR does / Why we need it?

followup of #294

Which Jira/Github issue(s) does this PR fix?

Resolves #

Special notes for your reviewer

Pre-checks (if applicable)

• [ x] Ran unit tests locally
• [ na] Validated the changes in a cluster
• [ na] Included documentation changes with PR

[codecov-commenter]

Codecov Report

Merging #298 (c452d4c) into main (2e3644c) will increase coverage by 0.39%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #298      +/-   ##
==========================================
+ Coverage   45.45%   45.85%   +0.39%     
==========================================
  Files          53       53              
  Lines        3753     3753              
==========================================
+ Hits         1706     1721      +15     
+ Misses       1777     1757      -20     
- Partials      270      275       +5     

see 1 file with indirect coverage changes

[Tof1973]

@samanthajayasinghe, here the PR to add test to cover changes in #294 (review)

[openshift-ci]

@Tof1973: all tests passed!

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[typeid]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Tof1973, typeid

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