[ Merge of http://go/wvgerrit/154593 ]
This CL updates the initial time used for reboot tests to be
within the valid range used by OPK. Also, the fake clock is
now synced with every use of the TestHost's clock function.
Also, the OPK's system clock is no longer initialized to 0
because this caused some tests to set initial playback time
to 0. That broke code that assumed a time of 0 mean "never".
I also removed some log spam in the WTPI code.
Bug: 222353528
Bug: 236317198
Change-Id: Ibdbdb2440454b9cf561cd9ec65ca3e40cf5a8d93
a20ee5bc54