ProvisioningRequest v1 client

[aleksandra-malinowska]

What type of PR is this?

/kind feature
/kind api-change

What this PR does / why we need it:

Adds ProvisioningRequest v1 API client.

Special notes for your reviewer:

This PR has several commits because the process of generating client for v1 wasn't straightforward. Not squashing for transparency and future reference. I haven't found a better workaround than removing and adding apis/ module.

Steps to generate client:

• (no commit) checked out k8s.io/codegen
• Fixed hack/update-codegen.sh as it was outdated (assumed /vendor and used old scripts which no longer exist in codegen)
• Turned apis/ into a regular package. Normally cluster-autoscaler/apis is a module that can be imported standalone, but it lives within cluster-autoscaler/, and codegen is very unhappy about it.
  • The same problem is solved in main Kubernetes repository with staging/ not being a module, and instead being mirrored in a separate repo.
  • Attempts to regenerate client without this step fail with main module (k8s.io/autoscaler/cluster-autoscaler) does not contain package k8s.io/autoscaler/cluster-autoscaler/apis/provisioningrequest/autoscaling.x-k8s.io/v1beta1.
• Regenerated existing v1beta1 client using this setup and newer codegen by running hack/update-codegen.sh
• Added types for v1
• Generated v1 client by running hack/update-codegen.sh
• Made apis/ a module again (reverted second commit)
• Updated code using this API to use v1 client

Does this PR introduce a user-facing change?

Added support for ProvisioningRequest v1 API.

/hold
/cc @MaciekPytel @mwielgus

[aleksandra-malinowska]

Tested conversion in a real cluster by creating a few v1beta1 ProvisioningRequests and verifying they're processed as expected by the version of CA built from this PR.

[aleksandra-malinowska]

/unhold

[k8s-triage-robot]

This PR may require API review.

If so, when the changes are ready, complete the pre-review checklist and request an API review.

Status of requested reviews is tracked in the API Review project.

[MaciekPytel]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• cluster-autoscaler/OWNERS [MaciekPytel,aleksandra-malinowska]

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