This commit fix "List Native Roles" task with Elasticsearch 7.11.0+
by removing the unused `body_format` parameter from `uri` module.
This parameter isn't used with a GET method but make request fail with
`request [GET /_security/role] does not support having a body` error
with Elasticsearch 7.11.0+.
In Python2, the dict.keys(), dict.values(), and dict.items() methods returns a list. Jinja2 returns that to Ansible via a string representation that Ansible can turn back into a list. In Python3, those methods return a dictionary view object.
resource: https://docs.ansible.com/ansible/2.4/playbooks_python_version.html#dictionary-views
