Test Name: ^autoupdate.*OOBE

Bug description:

Widespread failure of test "autoupdate_NonBlockingOOBEUpdate.delta" Failure reason: "Update did not fail with kNonCriticalUpdateInOOBE"

Link to Stainless results for the past 7 days (2018-08-10 to 2018-08-16):
https://stainless.corp.google.com/search?view=list&first_date=2018-08-10&last_date=2018-08-16&test=%5Eautoupdate_NonBlockingOOBEUpdate%5C.delta%24&build=%5ER69%5C-&status=FAIL&status=ERROR&status=ABORT&exclude_cts=false&exclude_not_run=false&exclude_non_release=true&exclude_au=false&exclude_acts=true&exclude_retried=true&exclude_non_production=false