Update the firewall cookbook to the latest version

This gives us comments from the named resources

cookbooks/firewall/resources/firewalld.rb

@@ -0,0 +1,28 @@
+unified_mode true
+
+provides :firewalld,
+         os: 'linux'
+
+action :install do
+  chef_gem 'ruby-dbus'
+  require 'dbus'
+  package 'firewalld'
+end
+
+action :reload do
+  service 'firewalld' do
+    action :reload
+  end
+end
+
+action :restart do
+  service 'firewalld' do
+    action :restart
+  end
+end
+
+action :disable do
+  service 'firewalld' do
+    action [:disable, :stop]
+  end
+end