(5909) Function to dyncamically generate resources.

This function allows you to dynamically generate resources,
passing them as a hash to the create_resources function.

This was originally written to be used together with an ENC.

Resources can be programitally generated as yaml and passed to a class.

classes:

webserver::instances:
  instances:
    instance1:
      foo: bar
    instance2:
      foo: blah

Then puppet code can consume the hash parameters and convert then into resources

class webserver::instances (

$instances = {}

) {

create_resources('webserver::instance', $instances)

}

Now I can dynamically determine how webserver instances are deployed to nodes
by updating the YAML files.