fix: datarace in datarace test

[shaneutt]

This fixes a really ironic bug found in our unit tests.

[codecov]

Codecov Report

Merging #1518 (9b3d598) into next (4125d78) will increase coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             next    #1518      +/-   ##
==========================================
+ Coverage   51.45%   51.53%   +0.07%     
==========================================
  Files          91       91              
  Lines        6316     6316              
==========================================
+ Hits         3250     3255       +5     
+ Misses       2772     2769       -3     
+ Partials      294      292       -2     

Flag	Coverage Δ
integration-test	48.51% <ø> (+0.23%)	⬆️
unit-test	38.93% <ø> (ø)

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Impacted Files	Coverage Δ
...trollers/configuration/zz_generated_controllers.go	48.41% <0.00%> (+0.57%)	⬆️
railgun/internal/ctrlutils/ingress-status.go	62.93% <0.00%> (+1.29%)	⬆️

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[mflendrich]

conditional lgtm if all suggestions get applied