Land rapid7#7850, Provide more informative error messages when the ipbloard_login scanner module fails to connect (fixes rapid7#7849)

Author: pbarry-r7

modules/auxiliary/scanner/http/ipboard_login.rb

@@ -64,7 +64,7 @@ def run_host(ip)
           :next_user
         when Metasploit::Model::Login::Status::UNABLE_TO_CONNECT
           if datastore['VERBOSE']
-            print_brute :level => :verror, :ip => ip, :msg => "Could not connect"
+            print_brute :level => :verror, :ip => ip, :msg => result.proof
           end
           invalidate_login(credential_data)
           :abort