🌱 Allow ROSA NodePool autoscaling MinReplicas to be 0

[jhjaggars]

Relaxes the validation for ROSA NodePool autoscaling to allow users to specify a minimum of 0 replicas, enabling scale-to-zero scenarios. MaxReplicas remains with a minimum of 1.

What type of PR is this?

/kind api-change

What this PR does / why we need it:

Rosa is gaining the ability to accept autoscaling nodepools with a minimum size of 0. This change enables setting min=0 in rosa for autoscaling nodepools.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

Checklist:

• [ x ] squashed commits
• includes documentation
• [ x ] includes emoji in title
• adds unit tests
• adds or updates e2e tests

Release note:

Enable setting min=0 for ROSA autoscaling nodepools.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Details

Needs approval from an approver in each of these files:

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[linux-foundation-easycla]

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• ✅ login: jhjaggars / name: Jesse Jaggars (696fe92)

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @jhjaggars. 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.

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[serngawy]

/ok-to-test

[serngawy]

Thanks for the PR @jhjaggars Would you update the Release note: section in the PR mentioning the changes.

[jhjaggars]

/retest

[k8s-ci-robot]

@jhjaggars: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-provider-aws-e2e-blocking	696fe92	link	true	/test pull-cluster-api-provider-aws-e2e-blocking

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Details

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-sigs/prow repository. I understand the commands that are listed here.