Turn pubsub scope off by default

src/var.py

@@ -100,6 +100,7 @@ API_VER_MAPPING = {
   u'licensing': u'v1',
   u'oauth2': u'v2',
   u'plus': u'v1',
+  u'pubsub': u'v1',
   u'reports': u'reports_v1',
   u'reseller': u'v1',
   u'siteVerification': u'v1',