This abstracts more of the help text into the ScanModule definition,
removing some more of the need for `zgrab2.AddCommand()`
https://github.com/zmap/zgrab2/pull/248
The previous patch allows the port to be specified in the
`ScanTarget{}`.
Since the port option in the Config may not be the port currently being
scanned, delete the `GetPort()` function provided by each module.
The `GetPort()` function is also not used. While we could just change
the meaning of this function, to mean "Return the port in the Config",
it is probably better to go ahead and just remove all references to it
as there are no users.
If the probe for SMB2 fails, close the connection and then try probing
for SMB1 as a backup.
Since there are more SMB2 servers in the wild, that is the first
attempt.
These two functions are largely duplicates, and only differ in the
boolean option passed to LoggedNegotiateProtocol(). Combine the
functions, and just take that option in as an argument to pass along.
