update notifier

Merge proposals dependent on lp://qastaging/~ci-train-bot/update-notifier/update-notifier-ubuntu-zesty-2208.1

  1. update-notifier-ubuntu-zesty-2208.1
  2. Dependent merge proposals

lp://qastaging/~ci-train-bot/update-notifier/update-notifier-ubuntu-zesty-2208.1 has no merge proposals.