[T] Disable parallel xdmf/hdf5 output writing in multiple files

After improvements/fixes the tests will be enabled again

ProcessLib/SteadyStateDiffusion/Tests.cmake

@@ -549,33 +549,33 @@ AddTest(
     cube_1e3_np3.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf v v 1e-3 1e-3
 )
 
-AddTest(
-    NAME ParallelFEM_GroundWaterFlow3D_NeumannBC_XDMF_np3_2files
-    PATH EllipticPETSc/XDMF_NP3_2
-    EXECUTABLE ogs
-    EXECUTABLE_ARGS ../cube_1e3_XDMF_np3_2files.prj
-    WRAPPER mpirun
-    WRAPPER_ARGS -np 3
-    TESTER xdmfdiff
-    REQUIREMENTS OGS_USE_MPI
-    DIFF_DATA
-    cube_1e3_np3_2files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf pressure pressure 1e-3 1e-3
-    cube_1e3_np3_2files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf v v 1e-3 1e-3
-)
-
-AddTest(
-    NAME ParallelFEM_GroundWaterFlow3D_NeumannBC_XDMF_np3_3files
-    PATH EllipticPETSc/XDMF_NP3_3
-    EXECUTABLE ogs
-    EXECUTABLE_ARGS ../cube_1e3_XDMF_np3_3files.prj
-    WRAPPER mpirun
-    WRAPPER_ARGS -np 3
-    TESTER xdmfdiff
-    REQUIREMENTS OGS_USE_MPI
-    DIFF_DATA
-    cube_1e3_np3_3files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf pressure pressure 1e-3 1e-3
-    cube_1e3_np3_3files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf v v 1e-3 1e-3
-)
+# AddTest(
+#     NAME ParallelFEM_GroundWaterFlow3D_NeumannBC_XDMF_np3_2files
+#     PATH EllipticPETSc/XDMF_NP3_2
+#     EXECUTABLE ogs
+#     EXECUTABLE_ARGS ../cube_1e3_XDMF_np3_2files.prj
+#     WRAPPER mpirun
+#     WRAPPER_ARGS -np 3
+#     TESTER xdmfdiff
+#     REQUIREMENTS OGS_USE_MPI
+#     DIFF_DATA
+#     cube_1e3_np3_2files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf pressure pressure 1e-3 1e-3
+#     cube_1e3_np3_2files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf v v 1e-3 1e-3
+# )
+
+# AddTest(
+#     NAME ParallelFEM_GroundWaterFlow3D_NeumannBC_XDMF_np3_3files
+#     PATH EllipticPETSc/XDMF_NP3_3
+#     EXECUTABLE ogs
+#     EXECUTABLE_ARGS ../cube_1e3_XDMF_np3_3files.prj
+#     WRAPPER mpirun
+#     WRAPPER_ARGS -np 3
+#     TESTER xdmfdiff
+#     REQUIREMENTS OGS_USE_MPI
+#     DIFF_DATA
+#     cube_1e3_np3_3files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf pressure pressure 1e-3 1e-3
+#     cube_1e3_np3_3files_0.xdmf cube_1e3_np3_cube_1x1x1_hex_1e3.xdmf v v 1e-3 1e-3
+# )
 
 AddTest(
     NAME ParallelFEM_GroundWaterFlow3D_NeumannBC_XDMF_np2