roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/19780265?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/19780265?buildTab=artifacts#/tpccbench/nodes=3/cpu=16/enc=true) on release-25.2.0-rc @ [22cec2232cf3ab2a0e5f93cd35aa1217d62a4400](https://github.com/cockroachdb/cockroach/commits/22cec2232cf3ab2a0e5f93cd35aa1217d62a4400):

```
test tpccbench/nodes=3/cpu=16/enc=true failed: (test_runner.go:864).func4: in provider: aws: failed to run: aws ec2 run-instances --associate-public-ip-address --count 1 --instance-type m7gd.4xlarge --image-id ami-05983a09f7dc1c18f --key-name teamcity-runner-oYVV_yc3y8CxKWM85IjynQ0PN6o= --region us-east-2 --security-group-ids sg-04d72b57e29d671f1 --subnet-id subnet-0258dc9d1b6473d84 --tag-specifications ResourceType=instance,Tags=[{Key=usage,Value=roachtest},{Key=Cluster,Value=teamcity-19780265-1748238389-50-n4cpu16},{Key=spot,Value=true},{Key=roachprod,Value=true},{Key=cluster,Value=teamcity-19780265-1748238389-50-n4cpu16},{Key=lifetime,Value=12h0m0s},{Key=arch,Value=arm64},{Key=created,Value=2025-05-26T07:01:49Z},{Key=Name,Value=teamcity-19780265-1748238389-50-n4cpu16-0003}] ResourceType=volume,Tags=[{Key=usage,Value=roachtest},{Key=Cluster,Value=teamcity-19780265-1748238389-50-n4cpu16},{Key=spot,Value=true},{Key=roachprod,Value=true},{Key=cluster,Value=teamcity-19780265-1748238389-50-n4cpu16},{Key=lifetime,Value=12h0m0s},{Key=arch,Value=arm64},{Key=created,Value=2025-05-26T07:01:49Z},{Key=Name,Value=teamcity-19780265-1748238389-50-n4cpu16-0003}] --user-data file:///tmp/aws-startup-script2173136071 --iam-instance-profile Name=roachprod-testing --block-device-mapping file:///tmp/aws-block-device-mapping2287011585 --instance-market-options MarketType=spot,SpotOptions={SpotInstanceType=one-time,InstanceInterruptionBehavior=terminate} --output json: stderr:
An error occurred (MaxSpotInstanceCountExceeded) when calling the RunInstances operation: Max spot instance count exceeded: exit status 254 [owner=test-eng]
```

Parameters:
- cloud=aws
- 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

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