(SERVER-260) Update submodules to latest commits

Update the Puppet and Facter submodules to the latest commits
of both.
I'm currently working on SERVER-155, which not only requires this submodule update, but will also be completely replacing this method, so I think it might make sense to open a PR addressing both of these issues simultaneously. I'll leave this one up for now, but will probably close it in favor of a PR for SERVER-155.