Transform aggregate.create notification

The aggregate.create.start and aggregate.create.end notifications
has been transformed to the versioned notification framework.

The notification payload contains the 'id' of the aggregate which
is the db primary key. It is added because the REST API also
uses the db id instead of the uuid in the os-aggregates' requests
and responses.

Implements: bp versioned-notification-transformation-ocata
Change-Id: I92fe504a8f7dc19b0e1df5884045d4bc0d9e4f98

doc/notification_samples/aggregate-create-end.json

@@ -0,0 +1,19 @@
+{
+    "priority": "INFO",
+    "payload": {
+        "nova_object.version": "1.0",
+        "nova_object.namespace": "nova",
+        "nova_object.name": "AggregatePayload",
+        "nova_object.data": {
+            "name": "my-aggregate",
+            "metadata": {
+                "availability_zone": "nova"
+            },
+            "hosts": [],
+            "id": 1,
+            "uuid": "788608ec-ebdc-45c5-bc7f-e5f24ab92c80"
+        }
+    },
+    "event_type": "aggregate.create.end",
+    "publisher_id": "nova-api:fake-mini"
+}