Add packer scripts for vagrant image generation

Change-Id: If163c456b756f6c7c8a7a197dabc8eb3b1fc7907
Signed-off-by: Mike Marchetti <mmarchetti@sandvine.com>
diff --git a/packer/scripts/cleanup.sh b/packer/scripts/cleanup.sh
new file mode 100644
index 0000000..cc09a97
--- /dev/null
+++ b/packer/scripts/cleanup.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+apt autoremove
+apt update
+
+rm -f /home/vagrant/*.sh
+
+wget --no-check-certificate https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub -O /home/vagrant/.ssh/authorized_keys
+chmod 0600 /home/vagrant/.ssh/authorized_keys
+chown -R vagrant:vagrant /home/vagrant/.ssh
+
+dd if=/dev/zero of=/EMPTY bs=1M
+rm -f /EMPTY
+sync