Upgrade the Vagrant and provisioning script to Ubuntu 16.06.

build/scripts/Provision.lua

@@ -60,8 +60,8 @@ local compile_llvm = is_vagrant()
 
 function provision_linux()
 	-- Add Repos
-	sudo("apt-key adv --keyserver http://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF")
+	sudo("apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF")
-	sudo("echo \"deb http://download.mono-project.com/repo/debian wheezy main\" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list")
+	sudo("echo \"deb http://download.mono-project.com/repo/ubuntu xenial main\" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list")
 
 	sudo("apt-get update")
 

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/trusty64"
+  config.vm.box = "ubuntu/xenial64"
 
   #load external box config
   config.vm.provider "virtualbox" do |vb|