Improve debug logging for bug reports

Add extra debug info when location providers stop by including the
reason why they are stopping.

Also add "time zone change" logging TimeZoneDetectorStrategyImpl for
telephony fallback state and ConfigurationInternal changes.

Bug: 197624972
Test: Manual inspection using adb shell dumpsys time_zone_detector
Change-Id: I80b5653896ac33c0e813ce2e7de339bcbf7e7bb8