Add generic test runner option

[heppu]

No description provided.

[elisa-codecov]

Codecov Report

Merging #194 (e6e3ae4) into main (756ca28) will increase coverage by 0.06%.
The diff coverage is 62.50%.

@@            Coverage Diff             @@
##             main     #194      +/-   ##
==========================================
+ Coverage   70.37%   70.43%   +0.06%     
==========================================
  Files          27       27              
  Lines        1475     1478       +3     
==========================================
+ Hits         1038     1041       +3     
  Misses        369      369              
  Partials       68       68              

Flag	Coverage Δ
unit	70.43% <62.50%> (+0.06%)	⬆️

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Files	Coverage Δ
integrationtest/opts.go	86.53% <62.50%> (+0.39%)	⬆️