Update ubuntu vm to 12.04.2

Vagrantfile

@@ -22,7 +22,7 @@ Vagrant.configure("2") do |config|
   end
 
   config.vm.provider :virtualbox do |vb|
-    vb.customize ["modifyvm", :id, "--memory", "1024", "--cpus", "2"]
+    vb.customize ["modifyvm", :id, "--memory", "2048", "--cpus", "2"]
   end
 
   # CentOS 6.4 vm
@@ -44,8 +44,8 @@ Vagrant.configure("2") do |config|
 
     # Ubuntu 12.04 vm
   config.vm.define :ubuntu do |ubuntu|
-    ubuntu.vm.box = "puppet-ubuntu1204"
-    ubuntu.vm.box_url = "http://puppet-vagrant-boxes.puppetlabs.com/ubuntu-server-1204-x64-vbox4210.box"
+    ubuntu.vm.box = "ubuntu-server-12042-x64"
+    ubuntu.vm.box_url = "http://puppet-vagrant-boxes.puppetlabs.com/ubuntu-server-12042-x64-vbox4210.box"
     ubuntu.vm.hostname = "ubuntu1204"
     ubuntu.vm.provider :virtualbox do |vb|
       vb.customize ["createhd",  "--filename", "ubuntu_disk0", "--size", "2048"]