Enable products for tests (#22757)

* Enable products for channels tests

* increase unit test timeout; check IsConfigReadOnly

* make app-layers

* Avoid loading boards tempaltes between tests to improve speed

* Fix delete query to be compatible with both databases

* Avoid preserving the templates for boards store tests

* Run all tests in one command

* Revert "Run all tests in one command"

This reverts commit 0330f7cd8f96b47776770e8f80ba6ba18d98b8d1.

* concurrent pkg group tests in CI

* Revert "Revert "Run all tests in one command""

This reverts commit 73892fec772575ff054a99ba9e00a7b57ca74164.

* Revert "concurrent pkg group tests in CI"

This reverts commit 550fb6cdd4a7f14d9632f2626bc66f389173b5d9.

* try testing 3 subsets of packages concurrently to improve time taken

* Revert "try testing 3 subsets of packages concurrently to improve time taken"

This reverts commit 97475f3c4eafa8bbe047097e0841220884f68cdc.

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: wiggin77 <wiggin77@warpmail.net>

server/boards/services/store/sqlstore/sqlstore.go

@@ -199,6 +199,10 @@ func (s *SQLStore) DBVersion() string {
 	return version
 }
 
+// dropAllTables deletes the contents of all the database tables
+// except the schema_migrations table with the intention of cleaning
+// the state for the next text to execute without having to run the
+// migrations.
 func (s *SQLStore) dropAllTables(db sq.BaseRunner) error {
 	if s.DBType() == model.PostgresDBType {
 		_, err := db.Exec(`DO