Fixed exception handling

  * It need for handling exception in case when exception catched.
  It is wrong return empty dictionary if exception catched.

Change-Id: I76d71cae5ada0384cbc44c8d4e6cc537c04f8f96
Related-PROD: PROD-29484
diff --git a/_states/keystonev3.py b/_states/keystonev3.py
index 6962290..bd79857 100644
--- a/_states/keystonev3.py
+++ b/_states/keystonev3.py
@@ -248,7 +248,7 @@
                 'user_create', name=name, cloud_name=cloud_name, **kwargs
             )
         except Exception as e:
-            log.error('Keystone user create failed with {}'.format(e))
+            log.error('Keystone user create failed with: {}'.format(e))
             return _create_failed(name, 'user')
         return _created(name, 'user', resp)