decoupled WS-A and WS-Sec does not result in faults back to clients

The example in:
https://issues.apache.org/jira/browse/CXF-2489
shows this.

Basically, if an interceptor that lives between MAPCodec and MAPAggregator throws an exception, the fault is sent like a normal response. However, the client is looking for a partial response and then the fault on the decoupled channel. Thus, the client never sees the fault and just gets an IOException and/or hangs.