[1863] Make stats-httpd listen on a non-default port for lettuce tests

tests/lettuce/configurations/bindctl_commands.config.orig

@@ -14,6 +14,12 @@
             "address": "127.0.0.1"
         } ]
     },
+    "StatsHttpd": {
+        "listen_on": [ {
+            "port": 47811,
+            "address": "127.0.0.1"
+        } ]
+    },
     "Boss": {
         "components": {
             "b10-auth": {"kind": "dispensable", "special": "auth" },