A servlet that reports the serviceURL for a given service ID.
When the web service client ENC is setup, it may contain port-component-link
entries that point to service endpoints in the same top level deployment.
The final serviceURL of those endpoints will become available after the
reference to the javax.xml.rpc.Service is bound to JNDI.
When the client does a lookup of the javax.xml.rpc.Service from JNDI the ObjectFactory
will contact this servlet for the final serviceURL. It is acceptable that the client
wsdl does not contain the correct serviceURL if the client is using the port-component-link element.