Fixes for NMB Protocol

[NtAlexio2]

This PR fixes some issues in NetBIOS protocol:

1. Add missing field to marshaling process in NBNodeStatusResponse() structure. In order to RFC1002, the NODE STATUS RESPONSE structure contains statistics field in the end.
2. Some code improvements in parameters
3. Use mocks in nmb tests, to work locally regardless of remote (expired) environment(s)

[anadrianmanrique]

Hi @NtAlexio2. Thanks for the PR
Regarding test changes, is there any reason to mock a remote test? Remote tests are intended to test functionality against a real target. In case where a specific functionality should be tested locally we do it in local unittest, as a separate test.

[NtAlexio2]

@anadrianmanrique There is no specific reason. should I rebase to b3fc47f? and also move tests to local unittest?

[anadrianmanrique]

@NtAlexio2 yes please. Thanks!

[NtAlexio2]

@anadrianmanrique done

[anadrianmanrique]

Thank you. Merging now