Update ProvisioningRequest API with the new name of scale-up provisioning class

[aleksandra-malinowska]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Changes the name of provisioning class from atomic-scale-up.autoscaling.x-k8s.io to best-effort-atomic-scale-up.autoscaling.x-k8s.io as agreed in #6849

Which issue(s) this PR fixes:

Fixes #6849

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Changed the name of provisioning class from `atomic-scale-up.autoscaling.x-k8s.io` to `best-effort-atomic-scale-up.autoscaling.x-k8s.io` in v1beta1. Note that this API is in draft stage and not yet supported in any release.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

- [KEP] https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/proposals/provisioning-request.md

/cc @Yaroslava @kisieland

[k8s-ci-robot]

@aleksandra-malinowska: GitHub didn't allow me to request PR reviews from the following users: yaroslava, kisieland.

Note that only kubernetes members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

What type of PR is this?

/kind bug

What this PR does / why we need it:

Changes the name of provisioning class from atomic-scale-up.kubernetes.io to best-effort-atomic-scale-up.kubernetes.io as agreed in #6849

Which issue(s) this PR fixes:

Fixes #6849

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Changed the name of provisioning class from `atomic-scale-up.kubernetes.io` to `best-effort-atomic-scale-up.kubernetes.io` in v1beta1. Note that this API is in draft stage and not yet supported in any release.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

- [KEP] https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/proposals/provisioning-request.md

/cc @Yaroslava @kisieland

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[aleksandra-malinowska]

/cc @towca

Please let me know if you're unable to take a look and we need another approver.

[towca]

/lgtm
/approve

The names in the release note have a wrong suffix right?

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aleksandra-malinowska, towca

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Needs approval from an approver in each of these files:

• cluster-autoscaler/OWNERS [towca]

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[aleksandra-malinowska]

The names in the release note have a wrong suffix right?

Yes, I copied them from KEP since I was looking at it anyway, my bad. Fixed now.

[yaroslava-serdiuk]

/cherry-pick cluster-autoscaler-release-1.30

[k8s-infra-cherrypick-robot]

@yaroslava-serdiuk: new pull request created: #7031

In response to this:

/cherry-pick cluster-autoscaler-release-1.30

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.

[k8s-infra-cherrypick-robot]

@yaroslava-serdiuk: new pull request could not be created: failed to create pull request against kubernetes/autoscaler#cluster-autoscaler-release-1.30 from head k8s-infra-cherrypick-robot:cherry-pick-6854-to-cluster-autoscaler-release-1.30: status code 422 not one of [201], body: {"message":"Validation Failed","errors":[{"resource":"PullRequest","code":"custom","message":"A pull request already exists for k8s-infra-cherrypick-robot:cherry-pick-6854-to-cluster-autoscaler-release-1.30."}],"documentation_url":"https://docs.github.com/rest/pulls/pulls#create-a-pull-request","status":"422"}

In response to this:

/cherry-pick cluster-autoscaler-release-1.30

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.