Adding Login Scanner for MyBook Live

This is a LoginScanner auxiliary module for Western
Digital MyBook Live NAS devices as well as the spec
for testing.
I feel like I am missing something here.  In ```mybook_live```, you are tracking whether or not to use SSL, which I assume actually works, but here it seems you are losing the ssl boolean, so the resulting cred will be for some IP+port but it won't be obvious what the service is.