Steve Kriss (2):
      CI: use locally built image for E2E tests (#3980)
      update Envoy to v1.18.4 (#3968)

Steve Sloka (1):
      (release-1-16) Cherrypick #3834 (#3974)

Sunjay Bhatia (3):
      test/e2e/upgrade: Delete certgen job if exists with the same name (#3762)
      upgrade tests: Correct "from" version for different git refs (#3747)
      Update Contour Docker image to v1.16.1.