Fix for MODULES-1384 that sorts the keys from wsgi_script_aliases before creating the template.

 When parsing wsgi_aliases, sort the keys then generate the underlying template.
shouldn't this have an `@`?
```erb
 <%- @wsgi_script_aliases.keys.sort.each do |key| -%>
 <%- if key != '' and @wsgi_script_aliases[key] != ''-%>
 WSGIScriptAlias <%= key %> "<%= @wsgi_script_aliases[key] %>"
```