I think this is the right place for iam_role_arn in the tests?

awx/main/tests/data/inventory/plugins/ec2/files/aws_ec2.yml

@@ -1,5 +1,4 @@
 boto_profile: /tmp/my_boto_stuff
-iam_role_arn: arn:aws:iam::123456789012:role/test-role
 compose:
   ansible_host: public_ip_address
   ec2_account_id: owner_id
@@ -54,6 +53,7 @@ hostnames:
 - network-interface.addresses.association.public-ip
 - dns-name
 - private-dns-name
+iam_role_arn: arn:aws:iam::123456789012:role/test-role
 keyed_groups:
 - key: placement.availability_zone
   parent_group: zones