unittest/python : add "src" to search path for pythonpath ?

Author: ManifoldFR

unittest/python/CMakeLists.txt

@@ -91,7 +91,7 @@ endfunction()
 
 function(pinocchio_add_lib_unit_test name)
   set(TEST_NAME "${PROJECT_NAME}-test-py-${name}")
-  add_python_unit_test(${TEST_NAME} "unittest/python/${name}.py" "bindings/python"
+  add_python_unit_test(${TEST_NAME} "unittest/python/${name}.py" "src" "bindings/python"
                        "unittest/python")
   add_windows_dll_path_to_test(${TEST_NAME})
 endfunction()