Merge pull request #14 from aripalo/master

Update to Virtual Box 4.3
Update Virtualbox 4.3.2
Merge pull request #17 from btobolaski/virtualbox-4.3.2

Update Virtualbox 4.3.2
refresh true for killing vbox processes and add tests
Merge branch 'master' of https://github.com/aripalo/puppet-virtualbox