Update vendor (github.com/mattermost)

vendor/github.com/mattermost/mattermost-server/model/user_search.go

@@ -0,0 +1,32 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type UserSearch struct {
+	Term           string `json:"term"`
+	TeamId         string `json:"team_id"`
+	NotInTeamId    string `json:"not_in_team_id"`
+	InChannelId    string `json:"in_channel_id"`
+	NotInChannelId string `json:"not_in_channel_id"`
+	AllowInactive  bool   `json:"allow_inactive"`
+	WithoutTeam    bool   `json:"without_team"`
+}
+
+// ToJson convert a User to a json string
+func (u *UserSearch) ToJson() string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+// UserSearchFromJson will decode the input and return a User
+func UserSearchFromJson(data io.Reader) *UserSearch {
+	var us *UserSearch
+	json.NewDecoder(data).Decode(&us)
+	return us
+}