升级流程引擎配置文件版本

vendor/go.mongodb.org/mongo-driver/internal/const.go

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+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+package internal // import "go.mongodb.org/mongo-driver/internal"
+
+// Version is the current version of the driver.
+var Version = "local build"
+
+// LegacyHello is the legacy version of the hello command.
+var LegacyHello = "isMaster"
+
+// LegacyHelloLowercase is the lowercase, legacy version of the hello command.
+var LegacyHelloLowercase = "ismaster"
+
+// LegacyNotPrimary is the legacy version of the "not primary" server error message.
+var LegacyNotPrimary = "not master"