Pg upgrade should have a wait time before it starts the procedure

When a user runs pg-upgrade task, it will put up a deploy page before it proceeds with the process.

I think we should wait for a certain period of time before we proceed with the upgrade. Maybe there is a transaction that is running.

I propose we add a 30 or 60s wait time after the deploy page is up. We should also print . or similar to inform the user that we are waiting.

What do you think @ibaum?