Set primary deployment replicas when autoscaler isn't used

[somtochiama]

Fix: #574

This pull request sets the replica of the primary to the replica of the canary during promotion if spec.autoscalerRef isn't set in the canary custom resource.

Signed-off-by: Somtochi Onyekwere somtochionyekwere@gmail.com

[codecov-commenter]

Codecov Report

Merging #1106 (5b3cbd0) into main (3bfa7c9) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

❗ Current head 5b3cbd0 differs from pull request most recent head 085639b. Consider uploading reports for the commit 085639b to get more accurate results

@@            Coverage Diff             @@
##             main    #1106      +/-   ##
==========================================
- Coverage   57.23%   57.21%   -0.02%     
==========================================
  Files          78       78              
  Lines        6342     6344       +2     
==========================================
  Hits         3630     3630              
- Misses       2171     2172       +1     
- Partials      541      542       +1     

Impacted Files	Coverage Δ
pkg/canary/deployment_controller.go	64.38% <0.00%> (-0.45%)	⬇️

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[stefanprodan]

LGTM

Thanks @somtochiama 🏅