[build] Update to a Vagrant box that actually works.

build/scripts/Vagrantfile

@@ -10,7 +10,7 @@ Vagrant.configure(2) do |config|
   # For a complete reference, please see the online documentation at
   # https://docs.vagrantup.com.
 
-  config.vm.box = "ubuntu/xenial64"
+  config.vm.box = "geerlingguy/ubuntu1604"
 
   #load external box config
   config.vm.provider "virtualbox" do |vb|