Switch ConfigUpdater to the new version of timezone updater code

This switches to the updater2 version that uses a different bundle
format and more thought given to versioning. The new version also
inspects some of the files in the bundle to make sure they are
valid.

Test: Manual testing
Bug: 31008728
Change-Id: I4e68ebd11dd86caa31ec520528c938f8c29eae4a