Make TimeDetectorService / Strategy consistent

Make TimeDetectorService / Strategy consistent with time zone detection
code, improve logging and generally tidy up.

1) Turn off debug logging / shorten log tags.
2) Add LocalLog for recording time changes.
3) Move to using FgThread for calls that can be done async / change
synchronization model (responsibility moves from service to strategy).
4) Move responisibility for determining current auto-time state to the
strategy.
5) Rename the strategy test to be correct(!)

Bug: 140712361
Test: atest services/tests/servicestests/src/com/android/server/timedetector/TimeDetectorServiceTest.java
Test: atest services/tests/servicestests/src/com/android/server/timedetector/SimpleTimeDetectorStrategyTest.java
Change-Id: I4902f6b360c168ec16a1595359153488a310a91a