Increase shutdown time constants

Wait longer before and after setting runtime deleted flag. This gives
daemons a longer time to reach an idle state, and
2033-shutdown-mechanics a better opportunity to observe changes during
the shutdown process. Slows down "normal" shutdowns with running user
daemons. That shouldn't normally occur in production and is rare during
testing.

In 2033-shutdown-mechanics, wait longer to make sure the child thread
is ready and waiting when we shut down.

Test: Ran 2033-shutdown-mechanics a few times.
Change-Id: I2b5b420cf8dfc37fa154c4624bcdc66acb78258d
2 files changed