write log_facility on a single line

Hey,

having a "<%= -%>" syntax in erb happens to not print a new line. Using the log_facility produced the following output (ubuntu 12.04 LTS):

```
log_facility=daemonpid_file=/var/run/nagios/nrpe.pid
```

Removing the '-' (dash at the end) prints:

```
log_facility=daemon
pid_file=/var/run/nagios/nrpe.pid
```