Support notifications for Neutron compute and gw

Change-Id: I9aa682c1c6c7bb2787b43f10362fea61e69b7a7d
diff --git a/neutron/files/mitaka/neutron-generic.conf.Debian b/neutron/files/mitaka/neutron-generic.conf.Debian
index 57e64f6..4dc3003 100644
--- a/neutron/files/mitaka/neutron-generic.conf.Debian
+++ b/neutron/files/mitaka/neutron-generic.conf.Debian
@@ -1181,6 +1181,9 @@
 # messaging, messagingv2, routing, log, test, noop (multi valued)
 # Deprecated group/name - [DEFAULT]/notification_driver
 #driver =
+{%- if neutron.get('notification', False) %}
+driver = messagingv2
+{%- endif %}
 
 # A URL representing the messaging driver to use for notifications. If not set,
 # we fall back to the same configuration used for RPC. (string value)
@@ -1551,4 +1554,4 @@
 
 # Sets the list of available ciphers. value should be a string in the OpenSSL
 # cipher list format. (string value)
-#ciphers = <None>
\ No newline at end of file
+#ciphers = <None>