kie-remote: Moving Rest objects to -client
BZ975798 - Trying to retrieve completed ProcessInstance causes NPE
kie-services-remote: Implemented correlation id pattern for JMS and added history REST operations

  - JMS messages now use the correlation id (so that users can match the request to the respones message)
  - UnfinishedError moved to KieRemoteServicesInternalError (used for "developer" error: situations that shouldn't occur)
kie-services-remote: fixed integration test