pe_mcollective module needs a way to customize cfg files.

Currently, the only way to edit certain config file settings is to edit the template for the config file.

This is not a good solution, as when the customer upgrades those changes could be overwritten.

All of the configuration options should be paramaters (with sane defaults) so that the items can be configured from the console.

Some of the specific values that are most often in need of changing are:

factsource
registration
registerinterval