Update e2e fixtures for size_bytes and pcidevice AER metrics

[anulika-asama]

Refresh golden e2e outputs so test-e2e matches node_disk_info size_bytes and pcidevice AER counters emitted from fixture sysfs data.

Summary by CodeRabbit

Release Notes

• New Features
  • Added PCIe Advanced Error Reporting metrics to monitor correctable, fatal, and non-fatal errors across PCI devices and root ports.
  • Enhanced disk device metrics with comprehensive labeling, including size, serial number, model, and additional device attributes for improved visibility and monitoring.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 40aa0320-aafc-43c5-b342-b30351f6ebaf

📥 Commits

Reviewing files that changed from the base of the PR and between 4d0ce53 and b6f840d.

📒 Files selected for processing (2)

• collector/fixtures/e2e-64k-page-output.txt
• collector/fixtures/e2e-output.txt

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Walkthrough

Two e2e fixture files (e2e-output.txt and e2e-64k-page-output.txt) are updated: node_disk_info metric lines gain a size_bytes label across all device entries, and a new block of node_pcidevice_aer_* metrics is added covering correctable, fatal, non-fatal, and root-port total PCIe AER error counters.

Changes

E2E Fixture Updates

Layer / File(s)	Summary
node_disk_info size_bytes label collector/fixtures/e2e-64k-page-output.txt, collector/fixtures/e2e-output.txt	node_disk_info series are updated to include size_bytes (and in e2e-output.txt, additional fields like major, minor, model, path, revision, serial, and wwn) for all listed block devices (dm-*, mmcblk0*, nvme0n1, sda/sdb/sdc, sr0, vda).
PCIe AER metrics block collector/fixtures/e2e-64k-page-output.txt, collector/fixtures/e2e-output.txt	A new fixture section adds node_pcidevice_aer_correctable_errors, node_pcidevice_aer_fatal_errors, node_pcidevice_aer_nonfatal_errors, and node_pcidevice_aer_rootport_total_errors series, each labeled by PCI bus, device, function, segment, and error_type.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• asama-ai/node_exporter#9: Extends node_disk_info to include the size_bytes label in the diskstats collector and updates the associated e2e/golden fixture outputs, directly related to the size_bytes label changes in this PR.

Poem

🐇 Hop hop, the disks now show their size,
A size_bytes label, what a prize!
PCIe errors? We count them all—
Correctable, fatal, big and small.
The fixtures gleam with data true,
A rabbit's work is never through! 🌟

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main changes: updating e2e fixtures to include size_bytes label for disk metrics and adding pcidevice AER metrics.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch diskstats/size_bytes-ci-fix

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