Support @HandlerChain on Service classes

From JAX-WS 2.0: 9.2.1.3 javax.jws.HandlerChain annotation

Conformance (Handler resolver for a HandlerChain annotation): For a generated service class (see 2.7)
which is annotated with a HandlerChain annotation, the default handler resolver MUST return handler
chains consistent with the contents of the handler chain descriptor referenced by the HandlerChain anno-
tation.