[test] With upstream changes in core/dune-grid!332 the test now pass

dune/foamgrid/test/CMakeLists.txt

 add_definitions(-DDUNE_FOAMGRID_EXAMPLE_GRIDS_PATH=\"${PROJECT_SOURCE_DIR}/doc/grids/\")
 add_definitions(-DDUNE_GRID_EXAMPLE_GRIDS_PATH=\"${DUNE_GRID_EXAMPLE_GRIDS_PATH}\")
 
-dune_add_test(SOURCES foamgrid-test.cc EXPECT_FAIL)
+if(${DUNE_GRID_VERSION} VERSION_LESS 2.7)
+  # before version 2.7 these tests fail because of an overly strict requirement
+  # in the grid test about the sum over all outer normals of a grid view
+  dune_add_test(SOURCES foamgrid-test.cc EXPECT_FAIL)
+  dune_add_test(SOURCES local-refine-test.cc EXPECT_FAIL)
+else()
+  dune_add_test(SOURCES foamgrid-test.cc)
+  dune_add_test(SOURCES local-refine-test.cc)
+endif()
+
 dune_add_test(SOURCES global-refine-test.cc)
-dune_add_test(SOURCES local-refine-test.cc EXPECT_FAIL)
 dune_add_test(SOURCES growth-test-1d.cc)
 dune_add_test(SOURCES growth-test-2d.cc)
 dune_add_test(SOURCES setposition-test.cc)