enable nlb-instance e2e tests for ipv6

[oliviassss]

Issue

Description

Enable nlb-instance e2e test for ipv6.
Tested locally with ginkgo -v -r test/e2e/service -- --kubeconfig=${KUBECONFIG} --cluster-name=ipv6-125 --aws-region=us-west-2 --aws-vpc-id=vpc-01292d33f19f444ce --ip-family IPv6 --certificate-arns xxx

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the docs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes

BONUS POINTS checklist: complete for good vibes and maybe prizes?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: oliviassss
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[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (e619a48) 55.76% compared to head (350c21b) 55.76%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3388   +/-   ##
=======================================
  Coverage   55.76%   55.76%           
=======================================
  Files         149      149           
  Lines        8827     8827           
=======================================
  Hits         4922     4922           
  Misses       3571     3571           
  Partials      334      334           

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[k8s-ci-robot]

@oliviassss: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-aws-load-balancer-controller-e2e-test	350c21b	link	true	/test pull-aws-load-balancer-controller-e2e-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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