Move check_sequencing indication into config response features subkey

src/client/messenger.cpp

@@ -638,7 +638,7 @@ void osd_messenger_t::check_peer_config(osd_client_t *cl)
         // Inform that we're OSD <osd_num>
         payload["osd_num"] = osd_num;
     }
-    payload["check_sequencing"] = true;
+    payload["features"] = json11::Json::object{ { "check_sequencing", true } };
 #ifdef WITH_RDMA
     if (!use_rdmacm && rdma_contexts.size())
     {

src/osd/osd_secondary.cpp

@@ -198,7 +198,7 @@ void osd_t::exec_show_config(osd_op_t *cur_op)
     json11::Json req_json = cur_op->req.show_conf.json_len > 0
         ? json11::Json::parse(std::string((char *)cur_op->buf), json_err)
         : json11::Json();
-    if (req_json["check_sequencing"].bool_value())
+    if (req_json["features"]["check_sequencing"].bool_value())
     {
         auto cl = msgr.clients.at(cur_op->peer_fd);
         cl->check_sequencing = true;