MM-22212 & MM-22208: Read from the higher-scoped scheme if the permission is non-moderated. (#13813)

* MM-22212: Read non-moderated permissions from higher-scoped scheme.

* MM-2212: Corrects test count in comment.

* MM-22212: Adds godoc comment.

* MM-2212: Switches to the channel roles check in a few more places.

* MM-22212: Refactors and fixes.

* MM-22212: Reverts change, no longer required.

* MM-22212: Removes translation.

* MM-22212: Un-comments merged new permission.

* MM-22212: Un-comments merged new permission.

* MM-22212: Performance tweak.

* MM-22212: Fixes some fmting.

* MM-22212: Add unit test for newly-added store methods.

* MM-22212: Renames app method.

* MM-22212: Re-uses existing function to find string in slice.

* MM-22212: Keeps 'higher-scoped' terminology for consistency.

* MM-22212: Refactors based on PR feedback.

* MM-22212: Fix for some bad merging.

* MM-22212: Renamed some things.

* MM-22212: Use an 'else' instead of a 'continue' for readability.

* MM-22212: Caches (*SqlRoleStore).ChannelRolesUnderTeamRole.

* MM-22212: Adds mock to new cache store.

* MM-22212: Adds missing open tracing app layer methods.

* MM-22212: Adds migration to add moderated permissions to channel_admin if present on channel_user.

* MM-22212: Migrates team schemes. Removes unused AppError.

* MM-22212: Fix for for if.

* MM-22212: Fixes iterator.

* MM-22212: Updates open tracing generated methods.

* MM-22212: Fix mocks.

* MM-22212: Change migration key name.

* MM-22212: Switched to data structure from other branch.

* MM-22212: Fixes tests after adding 'use_channel_mentions' to the channel_admin role.

* MM-22212: Adds tracking of channel moderation.

* Revert "MM-22212: Adds tracking of channel moderation."

This reverts commit 23689efa22c112e4ba37f6a212535dd7ebfb63db.

* MM-22212: Switch some functions to methods and vice versa.

* MM-22212: Fix for refactor bug not notifiying websocket about changed role.

* MM-22212: Adds test for public/private 'manage_members' handling.

* MM-22122 Fix manage channel members edge case for public and private channels (#14049)

* MM-22212: Adds moderated permission to team_admin.

* MM-22212: Updates migration.

* MM-22212: Revert unnecessary update to default roles.

* Add channel scheme updated event when channel scheme is deleted or created (#14057)

* MM-22212: Adds newline.

* MM-22212: Migration fix.

* MM-22212: Fix for migration.

* MM-22212: Test fix.

Co-authored-by: Farhan Munshi <3207297+fm2munsh@users.noreply.github.com>

cmd/mattermost/commands/sampledata.go

@@ -18,6 +18,7 @@ import (
 	"github.com/icrowley/fake"
 	"github.com/mattermost/mattermost-server/v5/app"
 	"github.com/mattermost/mattermost-server/v5/model"
+	"github.com/mattermost/mattermost-server/v5/utils"
 	"github.com/spf13/cobra"
 )
 
@@ -52,15 +53,6 @@ func init() {
 	RootCmd.AddCommand(SampleDataCmd)
 }
 
-func sliceIncludes(vs []string, t string) bool {
-	for _, v := range vs {
-		if v == t {
-			return true
-		}
-	}
-	return false
-}
-
 func randomPastTime(seconds int) int64 {
 	now := time.Now()
 	today := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.FixedZone("UTC", 0))
@@ -343,7 +335,7 @@ func sampleDataCmdF(command *cobra.Command, args []string) error {
 		totalUsers := 3 + rand.Intn(3)
 		for len(users) < totalUsers {
 			user := allUsers[rand.Intn(len(allUsers))]
-			if !sliceIncludes(users, user) {
+			if !utils.StringInSlice(user, users) {
 				users = append(users, user)
 			}
 		}
@@ -356,7 +348,7 @@ func sampleDataCmdF(command *cobra.Command, args []string) error {
 		totalUsers := 3 + rand.Intn(3)
 		for len(users) < totalUsers {
 			user := allUsers[rand.Intn(len(allUsers))]
-			if !sliceIncludes(users, user) {
+			if !utils.StringInSlice(user, users) {
 				users = append(users, user)
 			}
 		}