facter: always use the repository as a source of package version
facter: always use the repository as a source of package version

Using of ports tree (even with the presence of INDEX-XX) to determine outdated packages
is incredibly slow. In addition ports may have the updated version while pkg still not.
Since we work with pkg and not the ports we need to fix the source to repo

Fixes for issue #91

xaque208/puppet-pkgng,xaque208/puppet-pkgng,xaque208/puppet-pkgng