PLT-6341/PLT-6342 Update gorp to mattermost fork and add connection timeout setting (#6410)

* Update gorp to mattermost fork and add connection timeout setting

* Add go dependency

* Rename from connection timeout to query timeout

* Properly add gorp dependency

vendor/github.com/mattermost/gorp/errors.go

@@ -0,0 +1,38 @@
+// Copyright 2012 James Cooper. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+// Package gorp provides a simple way to marshal Go structs to and from
+// SQL databases.  It uses the database/sql package, and should work with any
+// compliant database/sql driver.
+//
+// Source code and project home:
+// https://github.com/go-gorp/gorp
+
+package gorp
+
+import (
+	"fmt"
+)
+
+// A non-fatal error, when a select query returns columns that do not exist
+// as fields in the struct it is being mapped to
+// TODO: discuss wether this needs an error. encoding/json silently ignores missing fields
+type NoFieldInTypeError struct {
+	TypeName        string
+	MissingColNames []string
+}
+
+func (err *NoFieldInTypeError) Error() string {
+	return fmt.Sprintf("gorp: no fields %+v in type %s", err.MissingColNames, err.TypeName)
+}
+
+// returns true if the error is non-fatal (ie, we shouldn't immediately return)
+func NonFatalError(err error) bool {
+	switch err.(type) {
+	case *NoFieldInTypeError:
+		return true
+	default:
+		return false
+	}
+}