a string duration with a time suffix like "30s" or "1h" or as seconds.
            If not provided, the default Vault TTL is used.
        :type ttl: str | unicode
        :param mount_point: Specifies the place where the secrets engine will be accessible (default: ad).
        :type mount_point: str | unicode
        :return: The response of the request.
        :rtype: requests.Response
        ú/v1/{}/roles/{}Ú