[v1alpha4] upstream v1alpha3 kcp strategy

[sadysnaat]

upstream kcp strategy v1alpha3 merge

kubernetes-sigs#5238

kubernetes-sigs#5237

[spectro-prow]

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[spectro-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[spectro-prow]

Hi @sadysnaat. Thanks for your PR.

I'm waiting for a spectrocloud 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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