Function cron_timezone_parse_negative

nodedb/src/config/server/scheduler.rs:211–214

()

    #[test]
    fn cron_timezone_parse_negative() {
        let tz = CronTimezone::parse("-05:00").unwrap();
        assert_eq!(tz.offset_seconds(), -5 * 3600);
    }

    #[test]
    fn cron_timezone_parse_zero_positive() {