adios2 vtx ext data vti test
Moved file generation of VTI files to external data to fix issue #17663 (closed) on tanaab. Related to !5936 (closed) Allow separation of bp3 and bp4 files
Moved file generation of VTI files to external data to fix issue #17663 (closed) on tanaab. Related to !5936 (closed) Allow separation of bp3 and bp4 files