ensure we use mkt settings for receipt verify (bug 907647)

services/wsgi/receiptverify.py

@@ -1,6 +1,8 @@
 import os
 import site
 
+os.environ['DJANGO_SETTINGS_MODULE'] = 'settings_local_mkt'
+
 wsgidir = os.path.dirname(__file__)
 for path in ['../',
              '../..',