Ensure logs are stored for 30 days

[dacook]

Description

We store a copy of production.log files from the last 4 releases, which should normally ensure that we have 30 days worth of records.
But it seems that logs can be truncated during the week if they get too large, so we have gaps in logs. Sometimes after only a couple of days (while we still have logs from a point in time 4 weeks ago).

Possible Fix

Maybe we can increase the truncate limit to reduce the likelihood of gaps.
Or better, move logging to the shared folder (like we already do for puma logs) so that we don't have gaps. We can set a reasonably high limit to allow for hopefully 30 days