✨ Add EKS Pod Identities to AWSManagedControlPlane

[Danil-Grigorev]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Note: This PR is a rebase of #4906 (since it comes from main branch, which requires permissions to push externally), and all credit comes to 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 #(, 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
• includes documentation
• includes emojis
• 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]

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[k8s-ci-robot]

PR needs rebase.

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