Fix BPEL samples

Please fix for 1.2.0

This is seen in jboss50

java.lang.NullPointerException
at org.jbpm.bpel.integration.server.SoapHandler.handleRequest(SoapHandler.java:183)
at org.jboss.ws.core.jaxrpc.handler.HandlerWrapper.handleRequest(HandlerWrapper.java:121)
at org.jboss.ws.core.jaxrpc.handler.HandlerChainBaseImpl.handleRequestInternal(HandlerChainBaseImpl.java:275)
at org.jboss.ws.core.jaxrpc.handler.HandlerChainBaseImpl.handleRequest(HandlerChainBaseImpl.java:235)
at org.jboss.ws.core.jaxrpc.handler.ServerHandlerChain.handleRequest(ServerHandlerChain.java:53)
at org.jboss.ws.core.jaxrpc.handler.HandlerDelegateJAXRPC.callRequestHandlerChain(HandlerDelegateJAXRPC.java:96)
at org.jboss.ws.core.server.AbstractServiceEndpointInvoker.callRequestHandlerChain(AbstractServiceEndpointInvoker.java:99)

To do the QA run
$ cd build
$ ant hudson-setup

You don't have to fix the standalone samples.