Workaround fix for test_channel

Author: splhack

src/testdir/test_channel.py

@@ -65,6 +65,7 @@ def handle(self):
                     elif decoded[1].startswith("echo "):
                         # send back the argument
                         response = decoded[1][5:]
+                        time.sleep(0.01)
                     elif decoded[1] == 'make change':
                         # Send two ex commands at the same time, before
                         # replying to the request.