Just adding more fields to match with their API schema

Author: fr3nch13

spec/fixtures/tenancy/contact-group_1.json

@@ -1,5 +1,8 @@
 {
   "id": 1,
+  "display": "Customer",
   "name": "Customer",
-  "slug": "customer"
+  "slug": "customer",
+  "description": "Customer contact group",
+  "parent": null
 }

spec/fixtures/tenancy/contact-groups.json

@@ -5,8 +5,11 @@
   "results": [
     {
       "id": 1,
+      "display": "Customer",
       "name": "Customer",
-      "slug": "customer"
+      "slug": "customer",
+      "description": "Customer contact group",
+      "parent": null
     }
   ]
 }