release-26.3.2-rc: roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/21497688?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/21497688?buildTab=artifacts#/acceptance/event-log) on release-26.3.2-rc @ [6149d98a3244ba2a3e4417d9e363da83e213e1b7](https://github.com/cockroachdb/cockroach/commits/6149d98a3244ba2a3e4417d9e363da83e213e1b7):

```
test acceptance/event-log failed: (test_runner.go:1027).func4: failed to retrieve authorized keys from gcloud: read SSH keys from gs://roachprod-ssh-keys-crl-e2e-infra/ssh-keys: googleapi: got HTTP response code 403 with body: AccessDeniedAccess denied.teamcity-nightly@cockroach-ephemeral.iam.gserviceaccount.com does not have storage.objects.get access to the Google Cloud Storage object. Permission 'storage.objects.get' denied on resource '//storage.googleapis.com/projects/_/buckets/roachprod-ssh-keys-crl-e2e-infra/objects/ssh-keys' (or it may not exist). [owner=test-eng]
```

Parameters:
- cloud=aws
- coverageBuild=false
- cpu=4
- diskCount=0
- runtimeAssertionsBuild=false
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

Same failure on other branches

- #174642 release-26.2.7-rc: roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-26.2.7-rc]
- #174641 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.4.17-rc]
- #174639 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.24-rc]
- #174597 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #174596 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #174595 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #174594 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #174593 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #174592 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #174591 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]

/cc @cockroachlabs/test-eng

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*cluster_creation.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-67840

Start with the linked TeamCity failure log and artifacts, then read the roachtest README at pkg/cmd/roachtest/README.md. The report identifies a denied storage.objects.get permission for the SSH-keys object in the roachprod-ssh-keys-crl-e2e-infra bucket; done means the cluster_creation test can retrieve authorized keys and pass.

Written by the indexing model from the issue text.