No TemplateRenderer for arch's configure_networks

I have a basic little playbook:

````ruby
Vagrant.configure("2") do |config|
  config.vm.provision :ansible do |ansible|
    ansible.playbook = "playbook.yml"
    ansible.inventory_file = "blah"
    ansible.sudo_user = "vagrant"
  end

  config.vm.box = "arch64"
  config.vm.box_url = "http://vagrant.pouss.in/archlinux_2012-07-02.box"
end
````

When I run it with `vagrant up` I'm told

````
[default] Configuring and enabling network interfaces...
[default] Forcing shutdown of VM...
[default] Destroying VM and associated drives...
/opt/vagrant/embedded/gems/gems/vagrant-1.2.2/plugins/guests/arch/cap/configure_networks.rb:7:in `block in configure_networks': uninitialized constant VagrantPlugins::GuestArch::Cap::ConfigureNetworks::TemplateRenderer (NameError)
	from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/plugins/guests/arch/cap/configure_networks.rb:6:in `each'
````

It looks like it's simply missing a `require` or two.