ICS-777: Switch logrotate interval to hourly

This is to address an issue where some IOCs spam the IOC shell log producing as much as 20GB in a single day.

Note that this is really just a bandaid fix; a better solution should be found to address how we write, store, and process IOC shell logs.

assigned to @simonrose

requested review from @henriquesilva

Just a note for the future reader, this change does not mean that logrotate will run hourly, the execution period is schedule by cron. This only means that logrotate will take into consideration in its decision if the file was rotated in the last hour (but it will also consider the file size, so it won't actually rotate every hour if it doesn't need to, see the decision tree here: https://github.com/logrotate/logrotate/blob/cb99cda639fb4b65810401878e052b7c2950f996/logrotate.c#L1444).

To have this "fix" applied, one must also move the logrotate script from /etc/cron.daily/logrotate to /etc/cron.hourly/logrotate.

approved this merge request

mentioned in commit 350d3d8a

merged