output "ec2_public_dns" {
  value = "${aws_instance.foo.public_ip}"
}
output "ec2_password" { 
  value = "${rsadecrypt(aws_instance.foo.password_data, file("${path.cwd}/ec2_foo.key"))}"
}

output "Private KEY" {
  value = "${tls_private_key.foo.private_key_pem}"
}

resource "local_file" "foo" {
    content  = "${tls_private_key.foo.private_key_pem}"
    filename = "${path.cwd}/ec2_foo.key"
}