Merge pull request #1 from MastaP/composite

Fixed starting VMs on VirtualBox
Updated vm provider config to be correct between VMware Fusion and VirtualBox
Merge branch 'master' into composite
Added tips for configuring Windows Firewall
Merge pull request #3 from mjomble/master

Added tips for configuring Windows Firewall
Multi-provider configuration improvements
Merge branch 'master' into composite
Updated Java and APT cookbooks.
Changed liverebel-apt cookbook to allow the specific APT repo to be empty and thus revert to standard behaviour.
Merge branch 'master' into composite
added "liverebel.preferredGroup" props to Java and Php nodes