Fix: remove hash selector after switching from bg to canary

[dthomson25]

close #506

[codecov]

Codecov Report

Merging #515 into master will increase coverage by 0.04%.
The diff coverage is 95.00%.

@@            Coverage Diff             @@
##           master     #515      +/-   ##
==========================================
+ Coverage   85.63%   85.68%   +0.04%     
==========================================
  Files          85       85              
  Lines        7901     7934      +33     
==========================================
+ Hits         6766     6798      +32     
- Misses        813      814       +1     
  Partials      322      322              

Impacted Files	Coverage Δ
service/service.go	64.70% <91.66%> (+1.74%)	⬆️
rollout/controller.go	73.33% <100.00%> (+0.29%)	⬆️
utils/service/service.go	100.00% <100.00%> (ø)
utils/evaluate/evaluate.go	96.15% <0.00%> (-0.52%)	⬇️

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