This allows a user to use templates for their FreeRADIUS configuration
files rather than static files.

This allows the user to pass in raw content rather than just
a direct file resource. Great for use cases where people don't
store private keys in raw files in their repo, but use some alternative
method to get them.

This means if you just git clone the module into your own source tree,
you don't have to also clone the syslog module if you're not likely to
use it :)