Extract firewall definitions to their own recipe

This allows us to use them for KVM hosts as well. Until now we had set
up ufw rules manually on the two KVM hosts (draco and centaurus)

Refs #244

site-cookbooks/kosmos-dirsrv/recipes/default.rb

@@ -37,14 +37,9 @@ end
 # with the run context is confusing:
 #
 # https://github.com/chef-cookbooks/firewall/issues/134
-unless node.chef_environment == "development"
-  include_recipe "firewall"
-  firewall_rule "ldap" do
-    port     [389, 636]
-    protocol :tcp
-    command  :allow
-  end
+include_recipe "kosmos-dirsrv::firewall"
 
+unless node.chef_environment == "development"
   # backup the data dir and the config files
   node.override["backup"]["archives"]["dirsrv"] = ["/etc/dirsrv", "/var/lib/dirsrv"]
   include_recipe "backup"