Add EKS cluster kubeconfig for each cluster and region.

eks_clusters_to_kubectl.sh

#!/usr/bin/env bash

for region in us-east-1 us-east-2; do
  aws eks list-clusters --region $region --query 'clusters' --output text | tr '\t' '\n' \
  | while IFS= read -r line; do
      aws eks --region $region update-kubeconfig \
        --name "${line}" \
        --alias "${line}" \
        --profile default
  done
done