fix backwards incompatiable change with broker.balancer config

services/src/main/java/io/druid/cli/CliBroker.java

@@ -87,7 +87,7 @@ public class CliBroker extends ServerRunnable
             JsonConfigProvider.bind(binder, "druid.broker.cache", CacheConfig.class);
             JsonConfigProvider.bind(binder, "druid.broker.select.tier", TierSelectorStrategy.class);
             JsonConfigProvider.bind(binder, "druid.broker.select.tier.custom", CustomTierSelectorStrategyConfig.class);
-            JsonConfigProvider.bind(binder, "druid.broker.select.server", ServerSelectorStrategy.class);
+            JsonConfigProvider.bind(binder, "druid.broker.balancer", ServerSelectorStrategy.class);
 
             binder.bind(QuerySegmentWalker.class).to(ClientQuerySegmentWalker.class).in(LazySingleton.class);