fix characterization
https://requests.esrf.fr/browse/DPC-351
This script launches the workflow and immediately asks for the status:
The workflow might not be in BESDB yet. In that case we look for the status of the workflow sub-process. The problem was it did not return "STARTED",200
when the workflow was running. Both the string and the HTTP return code was wrong.
Edited by Wout De Nolf