Enhance class_spec.rb file

This enhances the default test to check if the whole catalog compiles.

object_templates/class_spec.erb

@@ -7,7 +7,7 @@ describe '<%= name %>' do
     context "on #{os}" do
       let(:facts) { os_facts }
 
-      it { is_expected.to compile }
+      it { is_expected.to compile.with_all_deps }
     end
   end
 end