Changed inputs.conf to templated file, created monitor type that adds to template.

 - Created manifests/monitor.pp to hold files/directories to monitor.
 - Setup a concat to join all monitored files/directories.
 - Removed the calls to exec for add_monitor as this conflicts with newly defined types.

This allows you to specify a 'splunk::monitor' in multiple places (e.g. with each service with log files), and all the monitors will be concat'd into one file.