re-implement getting forward address from configuration_query_by_inde…

idl/replication.thrift

@@ -21,12 +21,13 @@ struct query_cfg_request
     2:list<i32> partition_indices;
 }
 
+// for server version > 1.11.2, if err == ERR_FORWARD_TO_OTHERS,
+// then the forward address will be put in partitions[0].primary if exist.
 struct query_cfg_response
 {
     1:base.error_code err;
     2:i32 app_id;
     3:i32 partition_count;
     4:bool is_stateful;
     5:list<partition_configuration> partitions;
-    6:base.rpc_address forward_address;
 }