Add Nova version log

We could not see log of Nova versions on the gate.
This patch adds the log to know each version status on the development.

Change-Id: I438754ad78cd07780b21874c9ee9685b549e3652

tempest/lib/services/compute/versions_client.py

@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import time
+
 from oslo_serialization import jsonutils as json
 
 from tempest.lib.api_schema.response.compute.v2_1 import versions as schema
@@ -23,7 +25,13 @@ class VersionsClient(base_compute_client.BaseComputeClient):
 
     def list_versions(self):
         version_url = self._get_base_version_url()
+
+        start = time.time()
         resp, body = self.raw_request(version_url, 'GET')
+        end = time.time()
+        self._log_request('GET', version_url, resp, secs=(end - start),
+                          resp_body=body)
+
         self._error_checker(resp, body)
         body = json.loads(body)
         self.validate_response(schema.list_versions, resp, body)