Add example config for AutoMappedAWSAccounts
Add example config for AutoMappedAWSAccounts

Signed-off-by: 7af30f3443cf3a59e95cc425cf32d5ebc22bdcf5@lyft.com

kubernetes-sigs/aws-iam-authenticator,kubernetes-sigs/aws-iam-authenticator,kubernetes-sigs/aws-iam-authenticator