Add workflow to auto sync helm chart to eks-charts

[oliviassss]

Description

Added a workflow to sync aws-load-balancer-controller Helm chart with eks-charts repo.

• Added a script to sync charts if there's a diff. This uses eks-bot to open a pull request on eks-charts repo that will need to be reviewed, approved and merged by the authors.
• Added make target to sync on-demand and on release (includes release notes)
• Added GitHub Actions workflow to sync aws-load-balancer-controller Helm to eks-chart repo on release.
• Sample command bash scripts/sync-to-eks-charts.sh -b aws-load-balancer-controller -n

Test

• Test sync from kubernetes-sigs/aws-load-balancer-controller (v2.3.1) to oliviassss/eks-charts (head: v2.3.0)
  • http://github.com/oliviassss/eks-charts/pull/7

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]

Hi @oliviassss. 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[codecov-commenter]

Codecov Report

Merging #2418 (d6560a6) into main (2f525fd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2418   +/-   ##
=======================================
  Coverage   53.35%   53.35%           
=======================================
  Files         140      140           
  Lines        7962     7962           
=======================================
  Hits         4248     4248           
  Misses       3397     3397           
  Partials      317      317           

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[kishorj]

/ok-to-test

[kishorj]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

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• OWNERS [kishorj]

Approvers can indicate their approval by writing /approve in a comment
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[oliviassss]

/retest

[kishorj]

/retest

[kishorj]

/retest