[test] Fix thresholds to work with legacy and slightly different fieldcompare criterion

test/multidomain/poromechanics/el2p/CMakeLists.txt

@@ -12,5 +12,4 @@ dumux_add_test(NAME test_md_poromechanics_el2p
                                 ${CMAKE_SOURCE_DIR}/test/references/test_md_poromechanics_el2p_poroelastic-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/test_md_poromechanics_el2p_poroelastic-00010.vtu
                        --command "${CMAKE_CURRENT_BINARY_DIR}/test_md_poromechanics_el2p params.input
-                                                              -Vtk.OutputName test_md_poromechanics_el2p"
-                       --zeroThreshold {"u":1e-14})
+                                                              -Vtk.OutputName test_md_poromechanics_el2p")

test/porousmediumflow/1pnc/1p3c/CMakeLists.txt

@@ -20,4 +20,4 @@ dumux_add_test(NAME test_1pnc_maxwellstefan_box
                         --files ${CMAKE_SOURCE_DIR}/test/references/test_1pnc_maxwellstefan_box-reference.vtu
                                  ${CMAKE_CURRENT_BINARY_DIR}/test_1pnc_maxwellstefan_box-00005.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1pnc_maxwellstefan_box params.input -Problem.Name test_1pnc_maxwellstefan_box"
-                        --zeroThreshold {"velocity_Gas \(m/s\)":1e-13})
+                        --zeroThreshold {"velocity_Gas \(m/s\)":1e-12})