Upgrade xorm to v1.2.2 (#16663) & Add test to ensure that dumping of login sources remains correct (#16847) (#16849)

* Upgrade xorm to v1.2.2 (#16663)

Backport #16663

Fix #16683

* Upgrade xorm to v1.2.2

* Change the Engine interface to match xorm v1.2.2

* Add test to ensure that dumping of login sources remains correct (#16847)

#16831 has occurred because of a missed regression. This PR adds a simple test to
try to prevent this occuring again.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

vendor/github.com/go-sql-driver/mysql/fuzz.go

@@ -0,0 +1,24 @@
+// Go MySQL Driver - A MySQL-Driver for Go's database/sql package.
+//
+// Copyright 2020 The Go-MySQL-Driver Authors. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// +build gofuzz
+
+package mysql
+
+import (
+	"database/sql"
+)
+
+func Fuzz(data []byte) int {
+	db, err := sql.Open("mysql", string(data))
+	if err != nil {
+		return 0
+	}
+	db.Close()
+	return 1
+}