Add waiting message

Author: jvazquez-r7

modules/exploits/multi/vnc/vnc_keyboard_exec.rb

@@ -164,6 +164,7 @@ def exploit
         exec_command('exit')
       end
 
+      print_status("#{rhost}:#{rport} - Waiting for session...")
       (datastore['TIME_WAIT']).times do
         Rex.sleep(1)