Monkeypatch bind port string is not supported

[gberl002]

At least for the flask example, the bind options port is given in the example as a string but it should be an int otherwise the address cannot be found.

@openziti.zitify(bindings={
    ('1.2.3.4', '18080'): bind_opts
})

Should be

@openziti.zitify(bindings={
    ('1.2.3.4', 18080): bind_opts
})

Or, add support for either string or numeric data types