fix contour httpproxy annotations overwritten if ingress class selected

[BrandonCate]

problem: If ingress class is selected for contour flagger install whenever httpproxy is created the annotations are completely overwritten, not allowing for any custom annotations.

fix: change it so the ingress class annotation is added instead of overriding

[codecov-commenter]

Codecov Report

Merging #1205 (59959e6) into main (560f884) will decrease coverage by 0.27%.
The diff coverage is 33.33%.

❗ Current head 59959e6 differs from pull request most recent head 0cecab5. Consider uploading reports for the commit 0cecab5 to get more accurate results

@@            Coverage Diff             @@
##             main    #1205      +/-   ##
==========================================
- Coverage   54.96%   54.69%   -0.28%     
==========================================
  Files          79       80       +1     
  Lines        6642     6823     +181     
==========================================
+ Hits         3651     3732      +81     
- Misses       2418     2511      +93     
- Partials      573      580       +7     

Impacted Files	Coverage Δ
pkg/router/contour.go	85.71% <33.33%> (-0.64%)	⬇️
pkg/canary/deployment_controller.go	44.87% <0.00%> (-17.88%)	⬇️
pkg/canary/factory.go	0.00% <0.00%> (ø)
pkg/canary/hpa_reconciler.go	79.76% <0.00%> (ø)
pkg/controller/scheduler.go	46.60% <0.00%> (+0.01%)	⬆️

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[BrandonCate]

@aryan9600 updated with your changes

[aryan9600]

@BrandonCate lint checking is failing CI, could you fix that, squash all your changes into a single commit and push that? Thanks!

[aryan9600]

@BrandonCate could you please squash all three commits into one commit with the message fix contour httproxy annotations overwrite and force push? thanks!

[BrandonCate]

sasquatched