Name VirtualBox from Vagrant folder and path hash
Name VirtualBox from Vagrant folder and path hash

fixes #848
saucal/VVV,DrewAPicture/varying-vagrant-vagrants,speartail/VVV,tomjn/varying-vagrant-vagrants,clreed87/VVV,tomjn/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,saucal/VVV,WybrenKoelmans/VVV,saucal/VVV,trepmal/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,clreed87/VVV,DrewAPicture/varying-vagrant-vagrants,WybrenKoelmans/VVV,Varying-Vagrant-Vagrants/VVV,trepmal/varying-vagrant-vagrants,speartail/VVV