GitLab

We are now able to select how apache should log accesses. These
modes are:

* default: as you would use it
* semianonym: no ips are logged for CustomLog, ErrorLog still logs
              ips
* anonym: no ips are logged for CustomLog, ErrorLog is sent to
          /dev/null
* nologs: all logs are sent to /dev/null

run_gid_name should per default be the same as the group for the
sftponly user. However, as can now set that one, we should be detect
if a groupname is set and use that one for the run_gid_name and not
as by default the $name.

you can now choose how users and groups are provided.
- local will generate user and groups locally
- everything else will currently just pass the user information to the apache