roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyIbmBazel/20815619?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyIbmBazel/20815619?buildTab=artifacts#/tpccbench/nodes=3/cpu=16/mt-shared-process) on master @ [a76eb5de5d3fdeb4f1276eefe5fdb11e6ebe53a4](https://github.com/cockroachdb/cockroach/commits/a76eb5de5d3fdeb4f1276eefe5fdb11e6ebe53a4):

```
test tpccbench/nodes=3/cpu=16/mt-shared-process failed: (test_runner.go:990).func4: in provider: ibm: failed to configure IBM Cloud account: failed to get or create transit gateway: failed to get transit gateways: Internal Server Error [owner=test-eng]
```

Parameters:
- cloud=ibm
- coverageBuild=false
- cpu=16
- runtimeAssertionsBuild=false
- ssd=0
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)

/cc @cockroachdb/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-57524

Start with the linked TeamCity log and artifacts for the roachtest cluster_creation failure, then read test_runner.go around line 990 and the roachtest README. Investigate the IBM provider's transit-gateway setup and determine whether the failure is reproducible or external. Done means the reported test completes successfully or the issue is narrowed to an actionable provider failure.

Written by the indexing model from the issue text.