Python 3 compatibility error handling: use to_native(e) instead of st…

…r(e) or e.me… (ansible-collections#26)

* Py3 compat error handling: use to_native(e) instead of str(e) or e.message
* PR comment changes, use fail_json_aws and is_boto3_error_code

This commit was initially merged in https://github.com/ansible-collections/community.aws
See: ansible-collections/community.aws@ffe14f9

plugins/modules/iam_mfa_device_info.py

@@ -82,7 +82,7 @@ def list_mfa_devices(connection, module):
     try:
         response = connection.list_mfa_devices(**args)
     except ClientError as e:
-        module.fail_json(msg=e.message, **camel_dict_to_snake_dict(e.response))
+        module.fail_json_aws(e, msg="Failed to list MFA devices")
 
     module.exit_json(changed=changed, **camel_dict_to_snake_dict(response))