Manage logging directory and file

[baurmatt]

Fixes #172

[bobapple]

I would prefer to create the directory and file without setting the group to adm

[baurmatt]

Which group would you prefer? From my understanding adm is the default group for log files. You can add user to this group which should have only read access.

[bobapple]

I'm not sure if all distributions and syslog daemons actually use the adm group. I've seen it on Debian and Ubuntu, but not on RHEL or SLES. Therefore I thought it would be better to not set the group at all.

[baurmatt]

Seems like the group exists on RHEL/SLES but isn't used. I therefor removed the owner and group settings. The defaults from:

  File {
    mode  => '0660',
    owner => $conf_user,
    group => $conf_group
  }

are now getting used.