chore(conf): mapLocal 置空串，避免系统配置加载时 ConcurrentHashMap.putAll NPE

QingJian/conf/c5e503ad.json

@@ -1 +1 @@
-{"init":"Y","forceData":"N","mapLocal":null,"version":"2"}
+{"init":"Y","forceData":"N","mapLocal":"","version":"2"}