roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyIbmBazel/20434097?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyIbmBazel/20434097?buildTab=artifacts#/unoptimized-query-oracle/disable-rules=all/seed-multi-region) on master @ [fa76ba12e60927d8aa5ebad0eb64221f121927de](https://github.com/cockroachdb/cockroach/commits/fa76ba12e60927d8aa5ebad0eb64221f121927de):

```
test unoptimized-query-oracle/disable-rules=all/seed-multi-region failed: (test_runner.go:873).func4: in provider: ibm: unable to import SSH key in region ca-tor: creating this SSH key will put user over quota. Allocated: 201, Quota: 200 [owner=test-eng]
```

Parameters:
- cloud=ibm
- 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

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Jira issue: CRDB-54157