rsyslog on all hosts:
- monitor.i.o.o gets role syslog
- all machines get rsyslog running via the rsyslog-formula
- they also get a syslog.i.o.o /etc/hosts entry, in case the DNS is not
working or the domain is not resolvable during boot
- we use our own template for /etc/rsyslog.conf as the upstream one is
too complex to make it suit our needs for now, and will need a few
upstream changes as well.