Autoscaling coredns docs configuration doesn't work on newer versions

[pierskarsenbarg]

Up to v1.10.1-eksbuild.11 of the coredns addon, the configuration in the docs will work.

In the "default" version (v1.11.1-eksbuild.8), that same configuration doesn't work and you can't add the addon, whether it's from the console or with Pulumi (or Terraform I suppose).

In the console you get the error message: Error adding add-on(s) coredns could not be added to cluster eks-cluster. Try again later.

With Pulumi (and I suppose Terraform as well) you get the error message:

* creating EKS Add-On (eks-cluster:coredns): operation error EKS: CreateAddon, https response error StatusCode: 400, RequestID: 86a50bd8-8f19-4386-a4a9-c2449183f02e, InvalidParameterException: ConfigurationValue provided in request is not supported: Json schema validation failed with error: [$.autoScaling: is not defined in the schema and the schema does not allow additional properties]

[pierskarsenbarg]

Looks like this has been fixed as of v1.11.1-eksbuild.9 (latest) but is still broken on v1.11.1-eksbuild.9 which is marked as "current/default" in the AWS console