.Archive 'task_log' database records This enhancement adds the `--task-log` option to the `nova-manage db archive_deleted_rows` CLI. When you use the  `--task-log` option, the `task_log` table records get archived while archiving the database. This option is the default in the nova-operator database purge cron job. Previously, there was no method to delete the `task_log` table without manual database modification. You can use the `--task-log` option with the `--before` option for records that are older than a specified `<date>`. The `updated_at` field is compared to the specifed `<date>` to determine the age of a `task_log` record for archival. If you configure `nova-compute` with `[DEFAULT]instance_usage_audit = True`, the `task_log` database table maintains an audit log of `--task-log` use.