Change to messagingv2 for oslo_messaging_notifications.driver

The oslo.messaging docs on the notification messaging driver
says that "messaging" (1.0) is a legacy format and you should
use messagingv2 unless otherwise required for that old format.

By default we should be testing with messagingv2.

Change-Id: I3031afe7551a0c8dde46e1ccfacff445fb68e122
diff --git a/lib/glance b/lib/glance
index 58f1def..0ba2cfa 100644
--- a/lib/glance
+++ b/lib/glance
@@ -112,7 +112,7 @@
     iniset $GLANCE_REGISTRY_CONF DEFAULT workers "$API_WORKERS"
     iniset $GLANCE_REGISTRY_CONF paste_deploy flavor keystone
     configure_auth_token_middleware $GLANCE_REGISTRY_CONF glance $GLANCE_AUTH_CACHE_DIR/registry
-    iniset $GLANCE_REGISTRY_CONF oslo_messaging_notifications driver messaging
+    iniset $GLANCE_REGISTRY_CONF oslo_messaging_notifications driver messagingv2
     iniset_rpc_backend glance $GLANCE_REGISTRY_CONF
     iniset $GLANCE_REGISTRY_CONF DEFAULT graceful_shutdown_timeout "$SERVICE_GRACEFUL_SHUTDOWN_TIMEOUT"
 
@@ -125,7 +125,7 @@
     iniset $GLANCE_API_CONF DEFAULT image_cache_dir $GLANCE_CACHE_DIR/
     iniset $GLANCE_API_CONF paste_deploy flavor keystone+cachemanagement
     configure_auth_token_middleware $GLANCE_API_CONF glance $GLANCE_AUTH_CACHE_DIR/api
-    iniset $GLANCE_API_CONF oslo_messaging_notifications driver messaging
+    iniset $GLANCE_API_CONF oslo_messaging_notifications driver messagingv2
     iniset_rpc_backend glance $GLANCE_API_CONF
     if [ "$VIRT_DRIVER" = 'xenserver' ]; then
         iniset $GLANCE_API_CONF DEFAULT container_formats "ami,ari,aki,bare,ovf,tgz"