Add outputs for IAM role arn and name

Author: wp-davisona

output.tf

@@ -1,3 +1,11 @@
 output "lambda_arn" {
   value = "${aws_lambda_function.lambda.arn}"
 }
+
+output "role_arn" {
+  value = "${aws_iam_role.lambda.arn}"
+}
+
+output "role_name" {
+  value = "${aws_iam_role.lambda.name}"
+}