ignore target group health check timeout for NLB

[kishorj]

Fixes #1714
AWS ELBv2 does not support specifying timeout for target group health check config as of now. The default is 10s for TCP/HTTPS protocols, and 6s for HTTP protocol and it cannot be modified. This change will ignore the healthcheck timeout annotation for now.

Tests

• Verified timeout is 10s for health check protocol HTTPS/TCP, 6s for HTTP
• Veriried annotation service.beta.kubernetes.io/aws-load-balancer-healthcheck-timeout gets ignored

[k8s-ci-robot]

Hi @kishorj. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[kishorj]

/label tide/merge-method-squash

[M00nF1sh]

/ok-to-test
/lgtm

[codecov-io]

Codecov Report

Merging #1727 (18e98d7) into main (66ae622) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1727      +/-   ##
==========================================
- Coverage   46.72%   46.68%   -0.04%     
==========================================
  Files         110      110              
  Lines        5984     5980       -4     
==========================================
- Hits         2796     2792       -4     
- Misses       2923     2925       +2     
+ Partials      265      263       -2     

Impacted Files	Coverage Δ
pkg/service/model_build_target_group.go	82.97% <ø> (-0.29%)	⬇️

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[M00nF1sh]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[M00nF1sh]

/test pull-aws-load-balancer-controller-unit-tes

[k8s-ci-robot]

@M00nF1sh: The specified target(s) for /test were not found.
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[kishorj]

/test pull-aws-load-balancer-controller-unit-test