Added Jena test that relies on Fuseki

Jena SPARQL update test on a Fuseki embedded server. 

@betehess I promised this a few days ago ;-)
It should be pretty easy to make that an abstract test in `rdf-test-suite` and to instantiate it in the case of `jena`. Even better if it works for `sesame`. Would you need guidance to do that, I am willing to help you.