Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/firewall/attributes/default.rb

@@ -0,0 +1,5 @@
+default['firewall']['allow_ssh'] = false
+default['firewall']['allow_winrm'] = false
+default['firewall']['allow_mosh'] = false
+default['firewall']['allow_loopback'] = false
+default['firewall']['allow_icmp'] = false