fix(chart): Updated release to not duplicate AH config

[stevehipwell]

Fixes #N/A

Description
This PR fixes the duplication of the Artifact Hub config file for each chart release resulting in the artifacthub.io tag having a new digest after each release. I've also added a README and fixed the CRDs chart config.

There should be an untagged image for each chart release with AH config prior to the current release, these should be deleted unless there is an automated cleanup policy in place.

How was this change tested?
I switched to this pattern for my own Helm chart logic and have tested the logic there.

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[stevehipwell]

CC @jonathan-innis

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[jonathan-innis]

Otherwise, changes look reasonable to me

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Pull Request Test Coverage Report for Build 8754972446

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Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 82.015%

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Totals
Change from base Build 8733550496:	0.02%
Covered Lines:	5372
Relevant Lines:	6550

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💛 - Coveralls

[jonathan-innis]

LGTM 🚀

[jonathan-innis]

@stevehipwell Looks like the helm charts still have updated digests whenever they get pushed with the same tag. I haven't done a ton of looking but there's perhaps some work that we can do here to get a reproducible build so that the digest is always the same here.

What do you think about creating an issue for reproducible builds for the helm charts as well as the AH config (by eventually finding a build flag to pass into the manifest file) so that we can track down those fixes eventually in our CI systems?

[stevehipwell]

@jonathan-innis do you mean the digest of the Helm chart created from the same raw files and uploaded with a helm push? If so then I suspect that this is an ORAS limitation as that's what Helm is using under the hood too. I'll take a look at if I can manually set the OCI metadata for ORAS and solve it at that layer. For Helm I can open a PR there for reproducible builds (although this is likely reproducible pushes.

For Karpenter you (probably) could manually implement the helm push with oras as I've done for the AH config to solve this today.