[helm chart] add resource-policy annotations to crds

[aburan28]

Issue

Guidance on upgrades for AWS LB controller includes references to uninstalling the old version before moving to the new version of the controller. In those cases it would be ideal if we could retain the CRDs during that uninstall so as to prevent downtime associated with a fresh install.

Description

CRDs are deleted by default when the helm chart is uninstalled. Offering an option to retain those resources would be great. Addittionally it would be ideal to pass in annotations to the CRDs.

In this PR I've added the following section which allow for configuring whether or not the helm "helm.sh/resource-policy": keep annotation is added to the CRDs, whether or not the CRDs are installed, and additional annotations that could be passed into the CRDs.

crds:
  keep: false
  install: true
  annotation: {}

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 🌟

[linux-foundation-easycla]

• ✅ login: aburan28 / name: Adam Buran (db91da0)
• ❌ - login: @adamjburan . The commit (956e344) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: aburan28
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[k8s-ci-robot]

Hi @aburan28. Thanks for your PR.

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[aburan28]

Anyone able to review this PR? It is a fairly simple change