Add support for cxf-rt-features-clustering in jbossws-cxf

We need to have the cxf failover feature, http://cxf.apache.org/docs/failoverfeature.html, be made available in jbossws-cxf.

We don't ship with this feature yet and the feature actually allows us to how to implement auto fail over and fail back of CXF SOAP calls from a primary to a secondary URL.

Here's is an example hosted for this, https://github.com/jaceko/cxf-circuit-switcher.