Upgrade iso_url to 2014.09.03
Update ISO URL and checksum to latest release
Updated Arch ISO to 2014.11.01
Install open-vm-tools
Create /mnt/hgfs to properly mount shared folders

When vagrant boots up the box (with open-vm-tools), it first mounts
a root shared in /mnt/hgfs before the other shared made available.
Set mirror to Japan