Fix to make Python running in parallel to properly import paraview.simple.

Before it assumed that the process was running a client.

Change-Id: Ia908d5eadfd285d635aba1444c38acf2c50b1759
Merge topic '14545_parallel_python_import_paraview.simple' into next

9d6784e4 Fix to make Python running in parallel to properly import paraview.simple.