Correct a scheme example error from fake netutron versions client

Based on the standard neturon api document in following url:
http://developer.openstack.org/api-ref/networking/v2/index.html?expanded=list-api-versions-detail#api-versions
the response parameters from neutron api versions list request
doesn't have names of 'updated', 'version', 'min_version' which
nova api versions list has though. This patch is removing the
misleading and make the example explicit.

Change-Id: I1ef117d6b61de16528d1b47fff41a5c8981b2075
diff --git a/tempest/tests/lib/services/network/test_versions_client.py b/tempest/tests/lib/services/network/test_versions_client.py
index ae52c8a..026dc6d 100644
--- a/tempest/tests/lib/services/network/test_versions_client.py
+++ b/tempest/tests/lib/services/network/test_versions_client.py
@@ -35,10 +35,7 @@
                     "type": "text/html"
                 }
             ],
-            "status": "CURRENT",
-            "updated": "2013-07-23T11:33:21Z",
-            "version": "2.0",
-            "min_version": "2.0"
+            "status": "CURRENT"
             }
         }