Add unit tests for CXF based SOAP services

Currently there are no unit tests for web services and some of them fail.

One type of error is that of returning null:
rg.apache.cxf.interceptor.Fault: Cannot write part return. RPC/Literal parts cannot be null. (WS-I BP R2211)

These types are not allowed according to the spec.
http://www.ws-i.org/profiles/basicprofile-1.1.html#Bindings_and_Parts
See section 4.4.1
R2211 An ENVELOPE described with an rpc-literal binding MUST NOT have the xsi:nil attribute with a value of "1" or "true" on the part accessors.

If there are other issues that people are also witnessing I urge them to use this test framework to write a simple unit test that replicates the error they are expierencing.