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/ec2_vpc_route_table_info.py

@@ -91,7 +91,7 @@ def list_ec2_vpc_route_tables(connection, module):
     try:
         all_route_tables = connection.get_all_route_tables(filters=filters)
     except BotoServerError as e:
-        module.fail_json(msg=e.message)
+        module.fail_json_aws(e, msg="Failed to get route tables")
 
     for route_table in all_route_tables:
         route_table_dict_array.append(get_route_table_info(route_table))