(dtgov-57) Decouple the bpmn from the deploy services (copy, rhq, cli, etc)

The deployment service is now a single endpoint that is completely
driven by the target configuration information.  The BPMN no longer
knows anything about the target type.  This decouples the process from
the service and means that users no longer need to change the process if
they want to change how deployments are done (e.g. change from 'copy' to
'rhq').

https://issues.jboss.org/browse/DTGOV-57