Land rapid7#7240, add server_port to HTTP fingerprint

Author: Brent Cook

lib/msf/core/exploit/http/client.rb

@@ -753,7 +753,7 @@ def http_fingerprint(opts={})
 
     # Create a new fingerprint structure to track this response
     fprint = {
-      :uri => uri, :method => method,
+      :uri => uri, :method => method, :server_port => rport,
       :code => res.code.to_s, :message => res.message.to_s,
       :signature => info
     }