test_36_mobile_address_multicast_same_mesh: duplicate message failure

[kgiusti]

See
https://github.com/skupperproject/skupper-router/actions/runs/4022469227/jobs/6912246110#step:28:3264
and
https://github.com/skupperproject/skupper-router/actions/runs/3966318157/jobs/6796984484#step:30:3235

self = <tests.system_tests_edge_mesh.ConnectedMeshTest testMethod=test_36_mobile_address_multicast_same_mesh>

def test_36_mobile_address_multicast_same_mesh(self):
    test = MobileAddressMulticastTest(self.routers[0].addresses[0],
                                      self.routers[1].addresses[0],
                                      self.routers[2].addresses[0],
                                      self.routers[2].addresses[0],
                                      'mc.test_36')
    test.run()

  self.assertIsNone(test.error)

E AssertionError: 'Receiver 1 received duplicate message 3' is not None

/home/runner/work/skupper-router/skupper-router/skupper-router/tests/system_tests_edge_mesh.py:450: AssertionError

[kgiusti]

https://github.com/skupperproject/skupper-router/actions/runs/4052251516/jobs/6971459111#step:30:3265