[EKS addon] [CoreDNS] [request]: Option to enable Topology Aware Routing

[alt-dima]

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Tell us about your request Add an option in the EKS Addon CoreDNS config to enable Topology Aware Routing on the coredns service

Which service(s) is this request for? EKS

Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard? Trying to enable Topology Aware Routing for the CoreDNS to minimize latency for DNS requests and decrease cross-AZ traffic. We have 3 AZ and about 15 coredns pods (so TAR should work)

Are you currently working around this issue? Manually added service.kubernetes.io/topology-mode annotation to the kube-dns service

Additional context

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[Nuru]

@alt-dima How are you adding the service.kubernetes.io/topology-mode annotation to the kube-dns service?