Update mattermost vendor (3.7 => 4.1)

vendor/github.com/mattermost/platform/einterfaces/elasticsearch.go

@@ -0,0 +1,25 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import "github.com/mattermost/platform/model"
+
+type ElasticsearchInterface interface {
+	Start() *model.AppError
+	IndexPost(post *model.Post, teamId string) *model.AppError
+	SearchPosts(channels *model.ChannelList, searchParams []*model.SearchParams) ([]string, *model.AppError)
+	DeletePost(post *model.Post) *model.AppError
+	TestConfig(cfg *model.Config) *model.AppError
+	PurgeIndexes() *model.AppError
+}
+
+var theElasticsearchInterface ElasticsearchInterface
+
+func RegisterElasticsearchInterface(newInterface ElasticsearchInterface) {
+	theElasticsearchInterface = newInterface
+}
+
+func GetElasticsearchInterface() ElasticsearchInterface {
+	return theElasticsearchInterface
+}