[MM-27274] Add permission to convert public channel to private (#15370)

* Add permission to convert public channel to private

* Rename to PERMISSION_CONVERT_PUBLIC_CHANNEL_TO_PRIVATE

* Fix tests

* Update definitions for roles that have manage_team

* Fix tests

* Add convert private channel to public permission

* Add to channel scoped perms

* Update permission checks on channel privacy endpoint

* Trigger CI

model/role.go

@@ -73,6 +73,8 @@ func init() {
 			PERMISSION_DELETE_PRIVATE_CHANNEL,
 			PERMISSION_DELETE_PUBLIC_CHANNEL,
 			PERMISSION_MANAGE_CHANNEL_ROLES,
+			PERMISSION_CONVERT_PUBLIC_CHANNEL_TO_PRIVATE,
+			PERMISSION_CONVERT_PRIVATE_CHANNEL_TO_PUBLIC,
 		},
 		PERMISSION_SYSCONSOLE_WRITE_USERMANAGEMENT_TEAMS.Id: {
 			PERMISSION_MANAGE_TEAM_ROLES,
@@ -85,6 +87,8 @@ func init() {
 			PERMISSION_MANAGE_TEAM,
 			PERMISSION_MANAGE_PRIVATE_CHANNEL_MEMBERS,
 			PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS,
+			PERMISSION_CONVERT_PUBLIC_CHANNEL_TO_PRIVATE,
+			PERMISSION_CONVERT_PRIVATE_CHANNEL_TO_PUBLIC,
 		},
 		PERMISSION_SYSCONSOLE_WRITE_ENVIRONMENT.Id: {
 			PERMISSION_MANAGE_JOBS,
@@ -576,6 +580,8 @@ func MakeDefaultRoles() map[string]*Role {
 			PERMISSION_MANAGE_OTHERS_SLASH_COMMANDS.Id,
 			PERMISSION_MANAGE_INCOMING_WEBHOOKS.Id,
 			PERMISSION_MANAGE_OUTGOING_WEBHOOKS.Id,
+			PERMISSION_CONVERT_PUBLIC_CHANNEL_TO_PRIVATE.Id,
+			PERMISSION_CONVERT_PRIVATE_CHANNEL_TO_PUBLIC.Id,
 		},
 		SchemeManaged: true,
 		BuiltIn:       true,