Do not vendor cookbooks using Berkshelf anymore

Instead, use the Berkshelf support in knife-solo and the
vagrant-berkshelf plugin on Vagrant

cookbooks/firewall/libraries/matchers.rb

@@ -1,30 +0,0 @@
-if defined?(ChefSpec)
-  ChefSpec.define_matcher(:firewall)
-  ChefSpec.define_matcher(:firewall_rule)
-
-  # actions(:install, :restart, :disable, :flush, :save)
-
-  def install_firewall(resource)
-    ChefSpec::Matchers::ResourceMatcher.new(:firewall, :install, resource)
-  end
-
-  def restart_firewall(resource)
-    ChefSpec::Matchers::ResourceMatcher.new(:firewall, :restart, resource)
-  end
-
-  def disable_firewall(resource)
-    ChefSpec::Matchers::ResourceMatcher.new(:firewall, :disable, resource)
-  end
-
-  def flush_firewall(resource)
-    ChefSpec::Matchers::ResourceMatcher.new(:firewall, :flush, resource)
-  end
-
-  def save_firewall(resource)
-    ChefSpec::Matchers::ResourceMatcher.new(:firewall, :save, resource)
-  end
-
-  def create_firewall_rule(resource)
-    ChefSpec::Matchers::ResourceMatcher.new(:firewall_rule, :create, resource)
-  end
-end