[pythontest] Fix python unit tests

unittest/python/bindings_SE3.py

unittest/python/bindings_force.py

unittest/python/bindings_frame.py

unittest/python/bindings_geometry_object.py

unittest/python/bindings_geometry_object_urdf.py

unittest/python/bindings_inertia.py

unittest/python/bindings_motion.py

unittest/python/model.py

unittest/python/tests.py