✨ ROSA: Add upgrade config to ROSAMachinePool

[serngawy]

What type of PR is this? /kind feature

What this PR does / why we need it: Add update configuration to ROSAMachinePool APIs.

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
• [ ] includes emojis
• [ ] adds unit tests
• [ ] adds or updates e2e tests

Release note:

Add UpdateConfig to ROSAMachinePool APIs.

[k8s-ci-robot]

Hi @serngawy. 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.

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](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[serngawy]

/cc @muraee

[muraee]

please also update nodePoolToRosaMachinePoolSpec() function https://github.com/kubernetes-sigs/cluster-api-provider-aws/blob/b99443a6c79f0a03543b5ce38bab2fbf471c9373/exp/controllers/rosamachinepool_controller.go#L483

[serngawy]

@damdo would you approve this PR for test

[muraee]

/ok-to-test

[muraee]

/lgtm

[dlipovetsky]

This adds some API fields.

/area api

[k8s-ci-robot]

@dlipovetsky: The label(s) kind/area/api cannot be applied, because the repository doesn't have them.

In response to [this](https://github.com/kubernetes-sigs/cluster-api-provider-aws/pull/4998#issuecomment-2158805744): >This adds some API fields. > >/kind area/api Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[dlipovetsky]

/area api

[dlipovetsky]

/assign

[dlipovetsky]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dlipovetsky

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/cluster-api-provider-aws/blob/main/OWNERS)~~ [dlipovetsky] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[muraee]

/area provider/rosa