Replacing properties in default value of other properties doesn't work due to faulty ordering.

I would like to do something like:

<requiredProperty key="name"/>
<requiredProperty key="archetypeId">
  <defaultValue>some-prefix-${name}</defaultValue>
</requiredProperty>

This is now not working, because the name property does not declare a default value.

Please see the attached test for an example.

The other attachement is a patch that changes the comparator for sorting the required properties in such a way that it actually works.