Review org.jboss.test.ws.jaxws.endoint tests

The org.jboss.test.ws.jaxws.endpoint tests need to be reviewed to test what's actually in the spec. Currently it's probably going beyond that, hence some of the tests are failing against different stacks. Stack specific checks can stay in the stacks' specific testsuite if we still want to keep them.
If there's something mentioned in the spec that's still failing, we can raise other jiras for that.