Create new helpers in regression tests
Create new helpers in regression tests

* Avoid future duplication of code
* Run tests in a unique directory to clean stuff more easily

HubLot/PBxplore,HubLot/PBxplore,pierrepo/PBxplore,jbarnoud/PBxplore,jbarnoud/PBxplore,pierrepo/PBxplore