Update metadata during subsequent promote

[kh34]

Support updating primary Deployment/DaemonSet/HPA/Service labels and annotations after first-time rollout

Implements #1032, refactor of #1042 as per https://cloud-native.slack.com/archives/C01JR4YUG4B/p1635952858039600

Fix: #1032

[stefanprodan]

Hi @kh34 can you please signoff your commit and properly format your commit message and PR name/description. Thanks

[codecov-commenter]

Codecov Report

Merging #1092 (121eb76) into main (5776f0b) will decrease coverage by 0.00%.
The diff coverage is 46.40%.

@@            Coverage Diff             @@
##             main    #1092      +/-   ##
==========================================
- Coverage   57.29%   57.29%   -0.01%     
==========================================
  Files          78       78              
  Lines        6304     6343      +39     
==========================================
+ Hits         3612     3634      +22     
- Misses       2154     2168      +14     
- Partials      538      541       +3     

Impacted Files	Coverage Δ
pkg/canary/factory.go	0.00% <0.00%> (ø)
pkg/canary/service_controller.go	0.00% <0.00%> (ø)
pkg/canary/daemonset_controller.go	59.14% <58.33%> (+0.81%)	⬆️
pkg/canary/deployment_controller.go	65.50% <64.91%> (+0.46%)	⬆️
pkg/canary/util.go	50.00% <0.00%> (+1.78%)	⬆️

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[kh34]

Hi @kh34 can you please signoff your commit and properly format your commit message and PR name/description. Thanks

Hi @stefanprodan I updated the PR. Thanks for reviewing.

[stefanprodan]

LGTM

Thanks @kh34 🏅