Migrate away from deprecated kustomize features

[james-callahan]

Issue

https://github.com/kubernetes-sigs/aws-load-balancer-controller/issues/3090

Description

This PR cleans up various things in the kustomize manifests. See individual commits for descriptions of the modifications.

In particular:

• we now don't have any deprecation warnings when you run kustomize build config/default with kustomize v5.0.0.
• there's now only one place you need to go to enable/disable the webhook/cert-manager integration

Checklist

• [ ] Added tests that cover your change (if possible)
• [ ] Added/modified documentation as required (such as the README.md, or the docs directory)
• [x] 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?! :exploding_head:

• [ ] Backfilled missing tests for code in same general area :tada:
• [x] Refactored something and made the world a better place :star2:

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[k8s-ci-robot]

Hi @james-callahan. Thanks for your PR.

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[james-callahan]

Rebased on v2.5.0.

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/lifecycle stale

[james-callahan]

Rebased on top of main post-v2.6.1

[james-callahan]

@kishorj / @M00nF1sh could you have a look at this?

[drGrove]

This will solve warnings in our CI system. Can someone take a look?

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/lifecycle rotten

[drGrove]

/remove-lifecycle rotten

[james-callahan]

rebased on v2.7.1

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[APPROVALNOTIFIER] This PR is NOT APPROVED

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[james-callahan]

PR needs rebase.

And rebased again on main

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/lifecycle stale

[james-callahan]

Rebased on main just before v2.8.0.

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/lifecycle rotten

[drGrove]

/remove-lifecycle-rotten

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/close

[k8s-ci-robot]

@k8s-triage-robot: Closed this PR.

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/close

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[drGrove]

/reopen

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[james-callahan]

/reopen

[k8s-ci-robot]

@james-callahan: Reopened this PR.

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/reopen

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 18.20%. Comparing base (2a66d99) to head (dd897cf). Report is 11 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3091       +/-   ##
===========================================
- Coverage   55.47%   18.20%   -37.28%     
===========================================
  Files         151      175       +24     
  Lines        9155    29280    +20125     
===========================================
+ Hits         5079     5330      +251     
- Misses       3734    23584    +19850     
- Partials      342      366       +24     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[k8s-triage-robot]

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/close

[k8s-ci-robot]

@k8s-triage-robot: Closed this PR.

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/close

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[archer-65]

/reopen

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[james-callahan]

/reopen

[k8s-ci-robot]

@james-callahan: Reopened this PR.

In response to this:

/reopen

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