you can type in the name of the file or directory that isn't there and include it as a part in the template. use the icon that looks like a page w/ a + on it.
We kinda needed the same thing.
We wanted to make sure the snmpd.conf file didnt say "ENTER LOCATION HERE".
Thats the default settings.
We basically told it cant do it ( the entry will be different for each location) so we look for the default and if it fails, then it was configured.
Now if it was configured properly.............
try adding the file (not config file) to the template as a part and then create a compliance rule that says:
File /etc/snmp/snmpd.conf Must Exist Contents does not contain "ENTER LOCATION HERE"