Map logging levels to journald priorities.

        Since Python log level numbers are "sparse", we have
        to map numbers in between the standard levels too.

def mapPriority(levelno):
        """Map logging levels to journald priorities.

        Since Python log level numbers are "sparse", we have
        to map numbers in between the standard levels too.
        """
        if levelno <= _logging.DEBUG:
            return LOG_DEBUG
        elif levelno <= _logging.INFO:
            return LOG_INFO
        elif levelno <= _logging.WARNING:
            return LOG_WARNING
        elif levelno <= _logging.ERROR:
            return LOG_ERR
        elif levelno <= _logging.CRITICAL:
            return LOG_CRIT
        else:
            return LOG_ALERT