add missing uuid import

Author: ohmayr

packages/django-google-spanner/tests/settings.py

@@ -5,6 +5,7 @@
 # https://developers.google.com/open-source/licenses/bsd
 
 import os
+import uuid
 
 DEBUG = True
 USE_TZ = True

packages/django-google-spanner/tests/system/django_spanner/utils.py

@@ -6,6 +6,7 @@
 
 import os
 import time
+import uuid
 
 from django.core.management import call_command
 from django.db import connection