[cmake] Guard example_pnm1p_permeabilityupscaling to have FOAM grid

examples/porenetwork_upscaling/CMakeLists.txt

@@ -3,7 +3,7 @@ dune_symlink_to_source_files(FILES "params.input")
 dumux_add_test(NAME example_pnm1p_permeabilityupscaling
                LABELS porenetwork example
                SOURCES main.cc
-               CMAKE_GUARD HAVE_UMFPACK
+               CMAKE_GUARD HAVE_UMFPACK dune-foamgrid_FOUND
                COMMAND ${CMAKE_CURRENT_BINARY_DIR}/example_pnm1p_permeabilityupscaling
                CMD_ARGS -Problem.ReferenceData "2.95910919e-13 2.91015548e-13 2.71752264e-13"
                         -Problem.TestEpsilon 1e-7)