[2252] changed the polling interval of b10-stats to a second for the lettuce test

tests/lettuce/configurations/xfrin/retransfer_slave_notify.conf

@@ -37,6 +37,9 @@
             "class": "IN"
         } ]
     },
+    "Stats": {
+        "poll-interval": 1
+    },
     "Init": {
         "components": {
             "b10-auth": { "kind": "needed", "special": "auth" },