roachtest: cluster_creation failed

**Note:** This build has runtime assertions enabled. If the same failure was hit in a run without assertions enabled, there should be a similar failure without this message. If there isn't one, then this failure is likely due to an assertion violation or (assertion) timeout.

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20652610?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20652610?buildTab=artifacts#/transfer-leases/signal) on master @ [cdcf76d0af53d78418ed10585fca7987c1c0aedc](https://github.com/cockroachdb/cockroach/commits/cdcf76d0af53d78418ed10585fca7987c1c0aedc):

```
test transfer-leases/signal failed: (test_runner.go:990).func4: in provider: azure: unable to authenticate; please use ``az login`` or double check environment variables [owner=test-eng]
```

Parameters:
- cloud=azure
- coverageBuild=false
- cpu=4
- runtimeAssertionsBuild=true
- 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-55860

Start with the roachtest README and the failure at test_runner.go:990, then inspect the linked TeamCity log and artifacts for the transfer-leases/signal run. Determine why the Azure provider cannot authenticate in cluster_creation and verify that the test completes successfully with the required authentication configuration.

Written by the indexing model from the issue text.