DeGroot tests

After creating the bindings and python package I observed that the DeGroot tests converges but the values are not within the abs(convergence tolerance). I dont know if this is normal but raising this issue to solve in future.
Specifically this test:
https://github.com/seldon-code/seldon/blob/3ba2520cc30e552b8b261a1103a0978a24588d0c/test/test_deGroot.cpp#L48