feat: Allow representing enums with their unqualified symbolic names in headers (#465)

* feat: Allow non-fully-qualified enums in routing headers

* Rename s/fully_qualified_enums/qualified_enums/g for correctness

* chore: minor tweaks

* chore: Temporary workaround for pytest in noxfile.

* Fix import order

* bring coverage to 100%

* lint

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* remove replacement in owlbot.py causing lint failure

Co-authored-by: Anthonios Partheniou <partheniou@google.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
4 files changed