'Create the server group.
For a full list of available parameters, please refer to the official
API reference:
https://developer.openstack.org/api-ref/compute/#create-server-group'

def create_server_group(self, **kwargs):

    post_body = json.dumps({'server_group': kwargs})
    (resp, body) = self.post('os-server-groups', post_body)
    body = json.loads(body)
    schema = self.get_schema(self.schema_versions_info)
    self.validate_response(schema.create_show_server_group, resp, body)
    return rest_client.ResponseBody(resp, body)
