Changing how vtkPVPythonCatalyst is added as a module.

For static builds I need to do the vtkPVPythonCatalyst module
after the pv python initialization stuff because of the dependencies.

Change-Id: I4659fe23e3f598d87e2e9384a9e0c030399e568f
Merge topic 'renable_catalyst_tests' into next

a0f7d24 Changing how vtkPVPythonCatalyst is added as a module.