[EKS] [request]: send control-plane logs to self-managed logging system

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**Tell us about your request**
We're looking for a way to send the control-plane logs (API server, Audit, Authenticator, Controller Manager, and Scheduler) to a self-managed logging system and not only to cloudwatch.

**Which service(s) is this request for?**
EKS

No files, tests, or entry points are identified in the issue. Begin by investigating how EKS exposes control-plane logs for the API server, Audit, Authenticator, Controller Manager, and Scheduler, and define completion as sending those logs to a self-managed logging system rather than only to CloudWatch.

Written by the indexing model from the issue text.