Include the default zones on RedHat

RedHat's default zones are baked into the stock named.conf, which the module's
template completely rewrites. Since the module is extremely view-based, and the
Debian default-zones are repositioned into the zones, let's take those defaults
out of the stock named.conf, build a configuration file out of them and include
it in the view just the same.

templates/view.erb

@@ -44,8 +44,8 @@ view "<%= @name %>" {
 	};
 <%-   end -%>
 <%- end -%>
-<%- if scope.lookupvar('osfamily') == 'Debian' -%>
-	include "<%= @confdir %>/named.conf.default-zones";
+<%- if @default_zones_include -%>
+	include "<%= @default_zones_include %>";
 <%- end -%>
 
 <%- Array(@zones).each do |zone| -%>