All OCG servers should have syslog readable

let OCG servers have readable /var/log/syslog and
/var/log/messages by using base::syslogs

but needs to have the $realm check because in labs
the class is used per default there in role/labs
and it causes duplicate definitions otherwise

thought this was still the better workaround
than putting it on the node level

Change-Id: I20f3977659783705b1f8174d329a2a609aaa123c
Merge "All OCG servers should have syslog readable" into production