NOTES: Using the [terraform-aws-modules/http](https://registry.terraform.io/providers/terraform-aws-modules/http/latest) provider is a more platform agnostic way to wait for the cluster availability than using a local-exec. With this change we're able to provision EKS clusters and manage the `aws_auth` configmap while still using the `hashicorp/tfc-agent` docker image.
NOTES: Starting in v12.1.0 the `cluster_id` output depends on the
`wait_for_cluster` null resource. This means that initialisation of the
kubernetes provider will be blocked until the cluster is really ready,
if the module is set to manage the aws_auth ConfigMap and user followed
the typical Usage Example. kubernetes resources in the same plan do not
need to depend on anything explicitly.
* Add Windows support
* Assign eks:kube-proxy-windows group to worker nodes
* Add Instructions for adding Windows Workers at FAQ.md
* Remove unnecessary variables from userdata_windows.tpl
* Update CHANGELOG.md
