Support custom ALB name via annotation

[kishorj]

Fixes #1483

Add support to specify custom ALB name via the annotation alb.ingress.kubernetes.io/name. This annotation can only be specified during ingress/ingress group creation. If the controller detects an existing ALB for the stack, this annotation has no effect.

Testing

• load balancer gets created with the custom name if specified via the annotation
• lb name doesn't get modified after creation
• conflicting names aren't allowed in the same group
• name gets auto-generated if annotation is not specified

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
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[codecov-io]

Codecov Report

Merging #1899 (1928643) into main (012e132) will increase coverage by 0.11%.
The diff coverage is 86.66%.

@@            Coverage Diff             @@
##             main    #1899      +/-   ##
==========================================
+ Coverage   48.79%   48.90%   +0.11%     
==========================================
  Files         113      113              
  Lines        6349     6361      +12     
==========================================
+ Hits         3098     3111      +13     
+ Misses       2978     2977       -1     
  Partials      273      273              

Impacted Files	Coverage Δ
pkg/ingress/model_build_load_balancer.go	51.40% <86.66%> (+3.38%)	⬆️

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[M00nF1sh]

/approve
/lgtm
👍

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kishorj, M00nF1sh

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 86.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 48.90%. Comparing base (012e132) to head (3e8d91c).
Report is 677 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/ingress/model_build_load_balancer.go	86.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1899      +/-   ##
==========================================
+ Coverage   48.79%   48.90%   +0.11%     
==========================================
  Files         113      113              
  Lines        6349     6361      +12     
==========================================
+ Hits         3098     3111      +13     
+ Misses       2978     2977       -1     
  Partials      273      273              

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