[stable/prometheus-operator] Allow autoTagVersion for hyperkube image

[VLZZZ]

What this PR does / why we need it:

This PR will allow to conditionally set image tag for hyperkube depending on installed Kubernetes version using Helm's built-in Capabilities.

https://v2.helm.sh/docs/chart_template_guide/#built-in-objects

Capabilities.KubeVersion provides a way to look up the Kubernetes version. It has the following values: Major, Minor, GitVersion, GitCommit, GitTreeState, BuildDate, GoVersion, Compiler, and Platform.

It will be really useful to avoid manual reconfiguration across clusters with different versions.
It won't affect existing installation until autoTagVersion will be set to true

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• DCO signed
• Chart Version bumped
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [stable/mychartname])

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: VLZZZ
To complete the pull request process, please assign bismarck
You can assign the PR to them by writing /assign @bismarck in a comment when ready.

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• stable/prometheus-operator/OWNERS

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[k8s-ci-robot]

Hi @VLZZZ. Thanks for your PR.

I'm waiting for a helm 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.

[scottrigby]

/hold

Let’s hold PRs to stable prometheus charts for a short time until prometheus-community/community#28 (comment) is resolved. If you want to help with that effort, to test etc, that would be great!

[scottrigby]

@VLZZZ as a user/contributor, would you mind helping to review and test this PR? prometheus-community/helm-charts#1

No need to reply here. If you can, please just reply and help there. It would help this process move along faster. Thanks!

[scottrigby]

🚧 This chart is now deprecated.

Further development has moved to prometheus-community/helm-charts. The chart has been renamed kube-prometheus-stack to more clearly reflect that it installs the kube-prometheus project stack, within which Prometheus Operator is only one component.

If applicable, please re-open this PR there. Thanks!