golangci-lint(gosimple): fix test files

[mmorel-35]

Please add a summary of your change

fix gosimple errors in test files

Does your change fix a particular issue?

No

Please indicate you've done the following:

• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file or added /kind changelog-not-required as a comment on this pull request.
• Updated the corresponding documentation in site/content/docs/main.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.67%. Comparing base (f654188) to head (75fe761).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7592   +/-   ##
=======================================
  Coverage   58.67%   58.67%           
=======================================
  Files         345      345           
  Lines       28743    28743           
=======================================
  Hits        16866    16866           
  Misses      10448    10448           
  Partials     1429     1429           

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