[arcane,config] Add condition polyhedral tests only if vtkIOLegacy is present.

Author: stdcm

arcane/src/arcane/tests/CMakeLists.txt

@@ -1,4 +1,4 @@
-set(TEST_DIRS . anyitem dof inout)
+set(TEST_DIRS . anyitem dof inout)
 
 set(TEST_LIBS ${ARCANE_ADDITIONNAL_TEST_LIBRARIES})
 if(MPI_FOUND AND NOT WIN32)
@@ -560,7 +560,7 @@ if(HDF5_FOUND)
 endif()
 if(vtkIOXML_FOUND)
   ARCANE_ADD_TEST_SEQUENTIAL(vtk_vtu testMesh-format_vtu.arc)
-  if (Neo_FOUND)
+  if (vtkIO_Legacy AND Neo_FOUND)
     arcane_add_test_sequential(polyhedral_vtk1 testMeshPolyhedral-1.arc)
     arcane_add_test_sequential(polyhedral_vtk2 testMeshPolyhedral-2.arc)
     arcane_add_test_sequential(polyhedral_vtk3 testMeshPolyhedral-3.arc)