Merge branch 'expressProcessingFlag.AthenaConfiguration-20190602' into 'master'

AthenaConfiguration: Add doExpressProcessing flag.

See merge request atlas/athena!23883

Control/AthenaConfiguration/python/AllConfigFlags.py

@@ -44,6 +44,7 @@ def _createCfgFlags():
     acf.addFlag('Scheduler.ShowControlFlow', True)
 
     acf.addFlag('Common.isOnline', False ) #  Job runs in an online environment (access only to resources available at P1) # former global.isOnline
+    acf.addFlag('Common.doExpressProcessing', False)
 
     def _checkProject():
         import os