chore(compute): restore smoke_test (#7914)

Restore and preserve Compute `smoke_test.go`.

Author: noahdietz

.github/.OwlBot.yaml

@@ -483,6 +483,7 @@ deep-preserve-regex:
   - /datacatalog/apiv1/iam_policy_client.go
   - /run/apiv2/locations_client.go
   - /datacatalog/apiv1/iam_policy_client.go
+  - /compute/apiv1/smoke_test.go
 
 deep-copy-regex:
   - source: /google/cloud/accessapproval/v1/cloud.google.com/go