Reduce time spent waiting for a "dead" provider

If communication with a provider disappears into a black hole, the
location_time_zone_manager waits for a timeout. This change
(temporarily) shortens the timeout because the primary provider is
currently only partially implemented and is swallowing requests.

Bug: 179488561
Test: Manual testing
Change-Id: I17eb8b35f92cb2e4814dedcfae36e3e64165450d