we're transferring a bunch of customers to another company and i'm rooting around in the database working out the correct sql query to get all the relevant data the new company needs. whilst doing this, I noticed that every single entry in the clients table has a private key in the id_rsa field, and an ssh key in the ssh_rsa field. these appear to be completely unrelated to the shell-user or cron-jobs, which are tied individual sites rather than the control panel login. so i'm kind of wondering now, why are these created and what are they used for?