test: use fully qualified request type name in tests (#35)

* test: use fully qualified request type name in tests

PiperOrigin-RevId: 475685359

Source-Link: googleapis/googleapis@7a12973

Source-Link: googleapis/googleapis-gen@370c729
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMzcwYzcyOWUyYmEwNjJhMTY3NDQ5YzI3ODgyYmE1ZjM3OWM1YzM0ZCJ9

* 🦉 Updates from OwlBot post-processor

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

* chore: override API mixins when needed

PiperOrigin-RevId: 477248447

Source-Link: googleapis/googleapis@4689c73

Source-Link: googleapis/googleapis-gen@c405978
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiYzQwNTk3ODZhNWNkODA1YTAxNTFkOTViNDc3ZmJjNDg2YmNiY2VkYyJ9

* 🦉 Updates from OwlBot post-processor

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

* chore: override API mixins when needed

PiperOrigin-RevId: 477248447

Source-Link: googleapis/googleapis@4689c73

Source-Link: googleapis/googleapis-gen@c405978
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiYzQwNTk3ODZhNWNkODA1YTAxNTFkOTViNDc3ZmJjNDg2YmNiY2VkYyJ9

* 🦉 Updates from OwlBot post-processor

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

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>