slurm-send-mail log file is only created if it already exists

[neilmunday]

This block of code in slurm-send-mail.py controls whether a log file is used or not:

    if log_file and log_file.is_file():
        logging.basicConfig(
            format=log_format, datefmt=log_date, level=log_level,
            filename=log_file
        )
    else:
        logging.basicConfig(
            format=log_format, datefmt=log_date, level=log_level
        )

This code means that the log file is only used if the log file already exists!

[neilmunday]

Fixed in 2.6 branch.