HPC | Cron Jobs

[jessb0t]

1. Improve retention policy of cronjob logs (currently waiting until size hits 5GB): change to deleting logs older than 1 year.
2. Review lab tech manual and update as needed for general overview of cronjobs (launching, stopping, and deleting of logs).

[davhunt]

1. Should be implemented now! (in clean-logs.sh)