storage: TestIntegration_PredefinedACLs failed

[flaky-bot]

Note: #9541 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

---

commit: ec0cbb2
buildURL: Build Status, Sponge
status: failed

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

---

When run at the same commit (ec0cbb2), this test passed in one build (Build Status, Sponge) and failed in another build (Build Status, Sponge).

[BrennaEpp]

=== RUN   TestIntegration_PredefinedACLs/grpc
    integration_test.go:4682: Object.ACL: expected acl to contain: 
    {entity:allAuthenticatedUsers role:READER}, got acl: 
    [{Entity:allUsers EntityID: Role:READER Domain: Email: ProjectTeam:<nil>} 
    {Entity:{email} EntityID: Role:OWNER Domain: Email:.... ProjectTeam:<nil>}]
    ```