Improve DVLS update installation workflow

Hi!

When installing DVLS updates there's two small things I noticed

1. When the update is installed and the scheduler service is stopped, admin users immediately receive alert notifocations (emails) with "Scheduler - Offline" and "Scheduler - No standby scheduler available". Could you add a delay to these alerts? Usually the scheduler will be up again within a few minutes during a update or a system reboot. I think the alert should only be triggered if the scheduler is unavailable for an extended period, like an hour for example.

2. I think the order of operations during the update installation process is wrong: Right now the application is stopped before the files are downloaded and extracted. Depending on bandwidth this could take some time. The files could be downloaded and extracted before the application is stopped, to reduce downtime. This would also improve error handling when the download fails for some reason.


Thank you!
Best regards,
Daniel