roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20758748?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAzureBazel/20758748?buildTab=artifacts#/jepsen/register/split) on master @ [ef4e9e488e7889a4193d814150dc27646438c0b6](https://github.com/cockroachdb/cockroach/commits/ef4e9e488e7889a4193d814150dc27646438c0b6):

```
test jepsen/register/split failed: (test_runner.go:990).func4: in provider: azure: creating VM teamcity-20758748-1763621489-254-n6cpu4-0004: Code="ZonalAllocationFailed" Message="Allocation failed. We do not have sufficient capacity for the requested VM size in this zone. Read more about improving likelihood of allocation success at http://aka.ms/allocation-guidance" [owner=test-eng]
```

Parameters:
- cloud=azure
- coverageBuild=false
- cpu=4
- 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-57112