Add packer scripts for vagrant image generation

Change-Id: If163c456b756f6c7c8a7a197dabc8eb3b1fc7907
Signed-off-by: Mike Marchetti <mmarchetti@sandvine.com>
diff --git a/packer/scripts/install_packages.sh b/packer/scripts/install_packages.sh
new file mode 100644
index 0000000..e24c826
--- /dev/null
+++ b/packer/scripts/install_packages.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+sudo apt -y update && apt-get -y upgrade
+sudo apt -y install git wget curl vim snapd docker.io zfs lxd software-properties-common