Update Cosmo filters/readers.

Update cosmo readers/filters xml based on changes to VTK. Now vtkCosmo depends
on MPI hence we depend on that module only when MPI support is enabled. Also
added XML for adaptive cosmo reader.

Change-Id: I3e98dd6102037895e2e59fd238e484df48cf894a
Fix python path inside py files

Change-Id: I6f7de7766c2fe45327e8d56811af719f4925c08b
Merge topic 'fix-python-cmake-rules' into next

9456022 Fix python path inside py files
Update VTK to bring in Cosmo fixes.

Change-Id: I97898935834b041559540151a7b72f5b016a2f50
Merge topic 'add_cosmo_reader' into next

7a39454 Update VTK to bring in Cosmo fixes.
6e69f4e Update Cosmo filters/readers.