Merge ~adam-collard/maas:speed-up-listener-spy into maas:master

[Adam Collard]

Fix PostgresListenerServiceSpy to quickly respond to messages

[Alberto Donato (ack)]

+1

review: Approve

[MAAS Lander (maas-lander)]

LANDING
-b speed-up-listener-spy lp:~adam-collard/maas/+git/maas into -b master lp:~maas-committers/maas

STATUS: FAILED BUILD
LOG: http://maas-ci.internal:8080/job/maas/job/branch-tester/8871/consoleText

[MAAS Lander (maas-lander)]

LANDING
-b speed-up-listener-spy lp:~adam-collard/maas/+git/maas into -b master lp:~maas-committers/maas

STATUS: FAILED MERGE
LOG: http://maas-ci.internal:8080/job/maas/job/branch-lander/818947/console

[MAAS Lander (maas-lander)]

UNIT TESTS
-b speed-up-listener-spy lp:~adam-collard/maas/+git/maas into -b master lp:~maas-committers/maas

STATUS: SUCCESS
COMMIT: 3be55061fb24437926f540a52535e376a8ee97f2

review: Approve

diff --git a/src/maasserver/tests/test_listener.py b/src/maasserver/tests/test_listener.py
index b7180de..0e12135 100644
--- a/src/maasserver/tests/test_listener.py
+++ b/src/maasserver/tests/test_listener.py
@@ -61,6 +61,8 @@ FakeNotify = namedtuple("FakeNotify", ["channel", "payload"])
 class PostgresListenerServiceSpy(PostgresListenerService):
     """Save received notifies `captured_notifies` before processing them.."""
 
+    HANDLE_NOTIFY_DELAY = CHANNEL_REGISTRAR_DELAY = 0
+
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         # Captured notifications from the database will go here.