FEM: unit tests: case frd file mflow and networkpressure reading, adapt to the slightly changed frd result file
FEM: unit tests: case frd file mflow and networkpressure reading, adapt to the slightly changed frd result file

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master