Something

    SomeClass::
        { /etc/syslog.conf
            BeginGroupIfNoLineMatching "# Added by cfengine.*"
                Append "# Added by cfengine"
                Append "*.info              @${LogServer}"
                Append "# end remote logging config"
                DefineInGroup "BounceSyslog"
            EndGroup
        }

shellcommands:

    BounceSyslog.redhat::
        "/etc/init.d/syslog restart"