[cddlm] testing, document fragments

[Steve Loughran]

...except of course a cdl:system it is not, in fact it is one node under 
a system. Returning a system is not adequate, I am meant to strip out 
and return the first child of a system


expected:
<?xml version="1.0" encoding="UTF-8"?>
<MyServer>
            <hostname>www.cddlm.org</hostname>
            <port>80</port>
         </MyServer>
actual:
<?xml version="1.0" encoding="UTF-8"?>
<system xmlns="http://www.gridforum.org/namespaces/2005/02/cddlm/CDL-1.0">
             <MyServer xmlns="">
               <hostname>localhost</hostname>
               <port>80</port>

               <hostname>www.cddlm.org</hostname>
             </MyServer>
           </system>

junit.framework.ComparisonFailure: test []: Namespace URI inconsistent 
between {}MyServer and 
{http://www.gridforum.org/namespaces/2005/02/cddlm/CDL-1.0}system


I seem to believe that <cdl:system> can have multiple nodes underneath. 
If I return a doc with a single root node, I can only test documents 
that have one thing to deploy, and so miss out on a whole suite of tests

I propose that
  1. the resolve() operation returns a document containing a cdl:system 
and all children
  2. we retrofit the system wrapper to all existing CDL tests.

-steve