[Paraview] pvserver test on different systems (UNCLASSIFIED)

[Utkarsh Ayachit]

Simon,

Although, explicit pvpython/pvbatch test isn't necessary, it's worth
doing it since sometimes the paths to locate ParaView's Python modules
can get messed up between different executables.

> So for individual python packages, I will need to do the import test for all the packages I want to test in the script right?

Yes, ideally.

Utkarsh