[test] Increase robustness of test scripts
Description
Newer versions of DuMuX have renamed some of the functions in their
Python test scripts (compare_vtk -> compareVTK). The changes in this
commit increase the robustness of the tests we run. The import of DuMuX'
test scripts are guarded by try/except
block.
Checklist
-
I made sure that the source files are formatted properly. -
I added my changes to the changelog ( CHANGELOG.md
) -
I updated the documentation. No change needed.