Merge pull request #3204 from certbot/nginx-reversion

Fix Nginx reversion

certbot-nginx/certbot_nginx/tests/tls_sni_01_test.py

@@ -80,7 +80,7 @@ class TlsSniPerformTest(util.NginxTest):
 
         mock_setup_cert.assert_called_once_with(self.achalls[0])
         self.assertEqual([response], responses)
-        self.assertEqual(mock_save.call_count, 2)
+        self.assertEqual(mock_save.call_count, 1)
 
         # Make sure challenge config is included in main config
         http = self.sni.configurator.parser.parsed[

certbot-nginx/certbot_nginx/tls_sni_01.py

@@ -46,8 +46,6 @@ class NginxTlsSni01(common.TLSSNI01):
         if not self.achalls:
             return []
 
-        self.configurator.save()
-
         addresses = []
         default_addr = "{0} default_server ssl".format(
             self.configurator.config.tls_sni_01_port)