Upgrade xorm to v0.8.0 (#8536)

vendor/xorm.io/xorm/session_context.go

@@ -0,0 +1,23 @@
+// Copyright 2019 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import "context"
+
+// Context sets the context on this session
+func (session *Session) Context(ctx context.Context) *Session {
+	session.ctx = ctx
+	return session
+}
+
+// PingContext test if database is ok
+func (session *Session) PingContext(ctx context.Context) error {
+	if session.isAutoClose {
+		defer session.Close()
+	}
+
+	session.engine.logger.Infof("PING DATABASE %v", session.engine.DriverName())
+	return session.DB().PingContext(ctx)
+}