:sparkles: Add EKS Pod Identities to AWSManagedControlPlane

[stefanmcshane]

trafficstars

What type of PR is this?

/kind feature

What this PR does / why we need it:

Support using AWS EKS Pod Identity Associations for mapping pods to IAM roles without needing OIDC or IRSA

https://docs.aws.amazon.com/eks/latest/userguide/pod-identities.html

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

Relates: #4747

Special notes for your reviewer:

Docs available here, for a brief overview on setup

Checklist:

• [ ] squashed commits
• [x] includes documentation
• [ ] includes emojis
• [x] adds unit tests
• [ ] adds or updates e2e tests

Release note:

Support mapping kubernetes service account to IAM role using EKS Pod Identity Associations

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[k8s-ci-robot]

Hi @stefanmcshane. 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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[stefanmcshane]

/retest

[stefanmcshane]

/retest-required

[stefanmcshane]

Split out the AWS updates to reduce the size of this PR #4916

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Once this PR has been reviewed and has the lgtm label, please assign sbueringer for approval. For more information see the Kubernetes Code Review Process.

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

[k8s-ci-robot]

New changes are detected. LGTM label has been removed.

[k8s-ci-robot]

PR needs rebase.

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