Allow passenger tempdir to be configurable
Merge branch 'make_passenger_tempdir_configurable' of https://github.com/yo61/puppetmodule into yo61-make_passenger_tempdir_configurable

Conflicts:
	manifests/master.pp

Add rake tests and make it so tempdir is only set if we pass a variable. So this doesn't break backward compatibility.
Merge branch 'yo61-make_passenger_tempdir_configurable'