fixtures: add created and last_udpated fields.

switched fixtures to json to avoid https://code.djangoproject.com/ticket/18867

netbox/extras/fixtures/extras.json

@@ -0,0 +1,47 @@
+[
+{
+    "model": "extras.graph",
+    "pk": 1,
+    "fields": {
+        "type": 300,
+        "weight": 1000,
+        "name": "Site Test Graph",
+        "source": "http://localhost/na.png",
+        "link": ""
+    }
+},
+{
+    "model": "extras.graph",
+    "pk": 2,
+    "fields": {
+        "type": 200,
+        "weight": 1000,
+        "name": "Provider Test Graph",
+        "source": "http://localhost/provider_graph.png",
+        "link": ""
+    }
+},
+{
+    "model": "extras.graph",
+    "pk": 3,
+    "fields": {
+        "type": 100,
+        "weight": 1000,
+        "name": "Interface Test Graph",
+        "source": "http://localhost/interface_graph.png",
+        "link": ""
+    }
+},
+{
+    "model": "extras.useraction",
+    "pk": 1,
+    "fields": {
+        "time": "2016-06-23T04:30:37.586Z",
+        "user": 1,
+        "content_type": 10,
+        "object_id": 1,
+        "action": 1,
+        "message": "Created site <a href=\"/dcim/sites/test/\">TEST</a>"
+    }
+}
+]

netbox/extras/fixtures/extras.yaml

@@ -1,12 +0,0 @@
-- model: extras.graph
-  pk: 1
-  fields: {type: 300, weight: 1000, name: Site Test Graph, source: 'http://localhost/na.png',
-    link: ''}
-- model: extras.graph
-  pk: 2
-  fields: {type: 200, weight: 1000, name: Provider Test Graph, source: 'http://localhost/provider_graph.png',
-    link: ''}
-- model: extras.graph
-  pk: 3
-  fields: {type: 100, weight: 1000, name: Interface Test Graph, source: 'http://localhost/interface_graph.png',
-    link: ''}