Fix confetty exit on server stop/restart

When the behavior fix for exiting on error was put in, it caused it to fail
exiting when remote disconnects.  Address by showing that the console
is definitely not active as well as exit being required now.

confluent_client/bin/confetty

@@ -593,6 +593,7 @@ while inconsole or not doexit:
                     sys.stdout.flush()
                 else:
                     doexit = True
+                    inconsole = False
                     sys.stdout.write("\r\n[remote disconnected]\r\n")
                     break
             else: