fix: Ensure podHash stays on stable-svc selector

[dthomson25]

No description provided.

[codecov]

Codecov Report

Merging #340 into master will increase coverage by 0.01%.
The diff coverage is 60%.

@@            Coverage Diff             @@
##           master     #340      +/-   ##
==========================================
+ Coverage   84.03%   84.04%   +0.01%     
==========================================
  Files          66       66              
  Lines        6051     6055       +4     
==========================================
+ Hits         5085     5089       +4     
  Misses        689      689              
  Partials      277      277

Impacted Files	Coverage Δ
utils/service/service.go	100% <100%> (ø)	⬆️
rollout/service.go	88.37% <50%> (+0.27%)	⬆️

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