Executes a management command.
        :param str database: Database against query will be executed.
        :param str query: Query to be executed.
        :param azure.kusto.data.request.ClientRequestProperties properties: Optional additional properties.
        :return: Kusto response data set.
        :rtype: azure.kusto.data._response.KustoResponseDataSet

def execute_mgmt(self, database, query, properties=None):
        """Executes a management command.
        :param str database: Database against query will be executed.
        :param str query: Query to be executed.
        :param azure.kusto.data.request.ClientRequestProperties properties: Optional additional properties.
        :return: Kusto response data set.
        :rtype: azure.kusto.data._response.KustoResponseDataSet
        """
        return self._execute(self._mgmt_endpoint, database, query, KustoClient._mgmt_default_timeout, properties)