test.wsdl.liberty fails because XSDs can't be downloaded

The test executes wsdl2java on a WSDL that indirectly imports schema documents hosted at http://www.w3.org/. They are still available, but to avoid repeated download of these documents, the W3C has decided to add an artificial latency (at least for non browser clients), and this causes the test to fail.

The proper solution for this would be to have local copies of these XSDs and to use an XML catalog, as described in AXIS-1984.