roachtest: ssh_problem failed

roachtest.ssh_problem [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyGceBazel/20225215?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyGceBazel/20225215?buildTab=artifacts#/connection_latency/nodes=9/multiregion/certs) on release-25.3.0-rc @ [8e21055d11394ad3d67d574efc6baebee688dddd](https://github.com/cockroachdb/cockroach/commits/8e21055d11394ad3d67d574efc6baebee688dddd):

```
test connection_latency/nodes=9/multiregion/certs failed: (test_runner.go:850).func4: cluster.PutE: put "/go/src/github.com/cockroachdb/cockroach/bin/cockroach.linux-amd64" failed: error persisted after 2 attempts: TRANSIENT_ERROR(ssh_problem): ~ scp -r -C -o StrictHostKeyChecking=no -o ConnectTimeout=10 -i /home/roach/.ssh/id_rsa /go/src/github.com/cockroachdb/cockroach/bin/cockroach.linux-amd64 ubuntu@34.142.32.35:./cockroach
ssh: connect to host 34.142.32.35 port 22: Connection refused
lost connection: exit status 1 [owner=test-eng]
```

Parameters:
- arch=amd64
- cloud=gce
- coverageBuild=false
- cpu=4
- encrypted=false
- fs=ext4
- localSSD=true
- 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)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-20225215/connection-latency-nodes-9-multiregion-certs/-62135596800000/-62135596680000)

Same failure on other branches

- #150125 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.1.9-rc]
- #150096 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-24.1.21-rc]
- #149972 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-24.3.16-rc]
- #149737 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.3-rc]
- #149125 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.3]
- #148346 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-24.3.15-rc]
- #148333 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.2-rc]
- #148257 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-24.1.20-rc]
- #148191 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-23.2.27-rc]
- #148064 roachtest: ssh_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.1.8-rc]

/cc @cockroachdb/test-eng

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*ssh_problem.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-52830