Add a script to delete old files from /var/log/sprout/ or /var/log/bono once that directory becomes too large.
Move logging cleanup script into separate package
run-parts doesn't like cron scripts with extensions: remove the .sh
Merge pull request #162 from Metaswitch/clean_old_logs

{Reviewer: Mike} Add a script to delete old files from /var/log/sprout/ or /var/log/bono ...