master Fixed the db test for http-kit

http-kit/benchmark_config

@@ -4,7 +4,7 @@
     "default": {
       "setup_file": "setup",
       "json_url": "/http-kit/json",
-      "db_url": "/http-kit/db/1",
+      "db_url": "/http-kit/db",
       "query_url": "/http-kit/db/",
       "port": 8080,
       "approach": "Realistic",