Description of problem: There are no methods in the 10.8 API to deploy a single file from a configuration channel. The only method available, system.config.deployAll, may not be desirable in a production environment when only certain files need to be pushed out. Version-Release number of selected component (if applicable): Satellite 5.3.0
Not needed. It's probably a better practice to deploy all configuration files at once to ensure that everything is up-to-date.