Use NFS instead of vboxfs for vagrant-cachier
Use NFS instead of vboxfs for vagrant-cachier

Because of its bad performance and the fact that vboxfs requires contrib or
non-free packages, the extension pack has been removed from Jessie's official
image (as of 8.2.2). People using vagrant-cachier won't be able to load kohadevbox
if this is not moved to NFS or another method.

This patch makes vagrant-cachier use NFS. If you can't use NFs, don't use vagrant-cachier
until we find another solution.

Signed-off-by: Tomas Cohen Arazi <63ac9f6777fb741d62c33cd73a438a8ce82c7d4a@gmail.com>

digibib/kohadevbox,joubu/kohadevbox,bywatersolutions/kohadevbox,mrenvoize/kohadevbox