Postalias and Postmap commands are not executed if the .db files already exists.

Updating the manifests trigger the Exec but the command is not executed. According with the documentation, the `creates` param is the problem: "A file that this command creates. If this parameter is provided, then the command will only be run if the specified file does not exist."

I switched to `subscribe` and `refreshonly` instead.

Ref: http://docs.puppetlabs.com/references/2.7.0/type.html#exec