Don't merge! Regression PR perf testing *without* metadata validation

[OPSTestProduction]

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[ByronWU-Docs]

Docs Build status updates of commit 4fb283d:

🕙 Full build: the average full build time is 6 min(s) 42 sec(s), this is based on the last 45 build(s) for this repository.

[ByronWU-Docs]

Docs Build status updates of commit 4fb283d:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
docs-ref-conceptual/TestingPullRequest.md	⚠️Warning	View (azure-cli-latest) View (azure-cli-2017-03-09-profile) View (azure-cli-2018-03-01-hybrid)	Details

docs-ref-conceptual/TestingPullRequest.md

• [Warning] Metadata with following name(s) are not allowed to be set in Yaml header, or as file level metadata in docfx.json, or as global metadata in docfx.json: content_type. They are generated by Docs platform, so the values set in these 3 places will be ignored. Please remove them from all 3 places to resolve the warning.
• [Warning] Metadata with following name(s) are not allowed to be set in Yaml header, or as file level metadata in docfx.json, or as global metadata in docfx.json: content_type. They are generated by Docs platform, so the values set in these 3 places will be ignored. Please remove them from all 3 places to resolve the warning.
• [Warning] Metadata with following name(s) are not allowed to be set in Yaml header, or as file level metadata in docfx.json, or as global metadata in docfx.json: content_type. They are generated by Docs platform, so the values set in these 3 places will be ignored. Please remove them from all 3 places to resolve the warning.
• [Warning] the value invalid_type is undefined for metadata content_type
• [Warning] the value invalid_type is undefined for metadata content_type
• [Warning] the value invalid_type is undefined for metadata content_type
• Line 7: [Warning] Invalid file link:(~/nonexisted1.md).
• Line 7: [Warning] Invalid file link:(~/nonexisted1.md).
• Line 7: [Warning] Invalid file link:(~/nonexisted1.md).
• Line 8: [Warning] Invalid file link:(~/nonexisted2.md).
• Line 8: [Warning] Invalid file link:(~/nonexisted2.md).
• Line 8: [Warning] Invalid file link:(~/nonexisted2.md).
• Line 9: [Warning] Invalid file link:(~/nonexisted3.md).
• Line 9: [Warning] Invalid file link:(~/nonexisted3.md).
• Line 9: [Warning] Invalid file link:(~/nonexisted3.md).

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.