Add all extant system_time device_config keys

Add / correct all known system_time device_config keys for U release.

Bug: 251818659
Test: treehugger only
Change-Id: I9c130eb10181dd2425e04bb977497bd5d148a392
1 file changed
tree: 34280cdc8cadce7f2332836a754eb57535a94e6d
  1. apex/
  2. framework/
  3. service/