title: Accessing role_arn in different folder than where the role was created
body: <p>I have a Terraform structure like:</p>
  
  <pre><code>prod
  nonprod
  applications
  +-- continuous/common/iam/iam.tf  &lt;-- create the role
  +-- dataflow/firehose/firehose.tf  &lt;-- want to refer to the role created above
  </code></pre>
  
  <p>I don't know how to do this.  In the iam's .tf file I have:</p>
  
  <pre><code>resource "aws_iam_role" "policy_daily_process_role" {
  ...
  }
  
  output "svc_daily_process_role_arn" {
    value = "${aws_iam_role.policy_daily_process_role.arn}"
  }
  </code></pre>
  
  <p>I am not sure how (or if) I can then refer to the svc_daily_process_role_arn from the firehose's .tf.  </p>