WIP: Diagnose odd failures in metal test with dumper

[justinsb]

No description provided.

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[k8s-ci-robot]

@justinsb: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kops-e2e-k8s-gce-cilium	13a51bb	link	true	/test pull-kops-e2e-k8s-gce-cilium
pull-kops-e2e-k8s-gce-ipalias	13a51bb	link	true	/test pull-kops-e2e-k8s-gce-ipalias
pull-kops-e2e-k8s-aws-calico	13a51bb	link	true	/test pull-kops-e2e-k8s-aws-calico
pull-kops-e2e-k8s-aws-amazonvpc	13a51bb	link	true	/test pull-kops-e2e-k8s-aws-amazonvpc
pull-kops-verify-gomod	13a51bb	link	true	/test pull-kops-verify-gomod
pull-kops-verify-generated	13a51bb	link	true	/test pull-kops-verify-generated
pull-kops-build	13a51bb	link	true	/test pull-kops-build
pull-kops-test	13a51bb	link	true	/test pull-kops-test
pull-kops-verify-govet	13a51bb	link	true	/test pull-kops-verify-govet
pull-kops-verify-golangci-lint	13a51bb	link	true	/test pull-kops-verify-golangci-lint

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[justinsb]

The problem I'm trying to track down is this one from the bare-metal test:

2025/02/09 21:33:23 starting to dump 3 nodes fetched through the Kubernetes APIs
2025/02/09 21:33:23 Dumping node vm0
2025/02/09 21:33:23 could not dump node vm0: connecting: unable to SSH to "10.123.45.10": ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
2025/02/09 21:33:23 Dumping node vm1
2025/02/09 21:33:23 could not dump node vm1: connecting: unable to SSH to "10.123.45.11": ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
2025/02/09 21:33:23 Dumping node vm2
2025/02/09 21:33:23 could not dump node vm2: connecting: unable to SSH to "10.123.45.12": ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain