Run a11y tests with Headless chrome on Jenkins

Description

Currently, all of the platform tests run on Jenkins use either Chrome or Firefox, except for a11y tests, which uses phantomJS. PhantomJS is currently unmaintained and looks like it will not have much of a future.

Move to chrome-headless Docker container

Steps to Reproduce

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Current Behavior

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Expected Behavior

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Reason for Variance

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Release Notes

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User Impact Summary

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Assignee

Unassigned

Reporter

Stuart Young

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Actual Points

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Platform Map Area (Levels 1 & 2)

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Platform Map Area (Levels 3 & 4)

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Priority

Unset

Epic Name

A11y on Headless Chrome