systemd is checking for xorg now, when trying to apply `localectl
set-x11-keymap`. So we just remove that line (we are not shipping boxes
with X11 either)

We have also updated the date for the local.json example file

Signed-off-by: Christian Rebischke <chris@nullday.de>

We need to re-initialize the pacman keyring for every machine,
otherwise every machine would have the same pacman master key. The same
pacman master key opens the possibility for Mitm-attacks.

Signed-off-by: Christian Rebischke <Chris.Rebischke@posteo.de>

Write zeros to a file on the root partition until the filesystem is
full, then unlink the file. Packer will compress the disk as part of
the build, resulting in smaller final disk image.

Use Virtualbox guest kernel modules for Arch Kernel (virtualbox-guest-modules-arch).

added polkit to pacstrap for systemctl poweroff, added sudo to poweroff
command, moved link for systemd-resolved to postinstall.sh

added new postinstall.sh, moved the controllers to postinstall.sh and added the script to vagrant.json