roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20653448?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20653448?buildTab=artifacts#/cdc/multi-table-pts-benchmark/per-table-pts=true/num-tables=500/num-ranges=10) on master @ [c4dbc61b5588a3c607a5c7ee9dcf38be7750787f](https://github.com/cockroachdb/cockroach/commits/c4dbc61b5588a3c607a5c7ee9dcf38be7750787f):

```
test cdc/multi-table-pts-benchmark/per-table-pts=true/num-tables=500/num-ranges=10 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=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-55882

Start with the roachtest README and the failure at test_runner.go:990, then inspect the Azure provider path involved in cluster_creation. Use the linked TeamCity log and artifacts to confirm the authentication failure. Done means Azure authentication works for this roachtest and the cluster_creation test passes again.

Written by the indexing model from the issue text.