Disable discover runner on Django >= 1.6

Author: stefanw

celery_haystack/test_settings.py

@@ -1,5 +1,7 @@
 import os
 
+import django
+
 from celery import Celery
 
 app = Celery('celery_haystack')
@@ -32,7 +34,8 @@
 CELERYD_LOG_LEVEL = "DEBUG"
 CELERY_DEFAULT_QUEUE = "celery-haystack"
 
-TEST_RUNNER = 'discover_runner.DiscoverRunner'
+if django.VERSION < (1, 6):
+    TEST_RUNNER = 'discover_runner.DiscoverRunner'
 
 if os.environ.get('HAYSTACK') == 'v1':
     HAYSTACK_SITECONF = 'celery_haystack.tests.search_sites'