Rename identities to be appropriate

[jimbo]

Description

Certain terms in programming vernacular have connotations or implications that make them less than appropriate. Where we can replace them with alternatives, we should.

See the corresponding PR in core.

Related Issue

Closes PWA-652.

Acceptance

@jcalcaben
@awilcoxa

Verification Stakeholders

@dpatil-magento

Specification

Verification Steps

No net change.

Screenshots / Screen Captures (if appropriate)

Checklist

• I have added tests to cover my changes, if necessary.

• I have updated the documentation accordingly, if necessary.

[PWAStudioBot]

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📖	Associated JIRA tickets: PWA-652.

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[devops-pwa-codebuild]

Performance Test Results

The following fails have been reported by WebpageTest. These numbers indicates a possible performance issue with the PR which requires further manual testing to validate.

https://pr-2478.pwa-venia.com : LH Performance Expected 0.85 Actual 0.57, LH Best Practices Expected 1 Actual 0.92
https://pr-2478.pwa-venia.com/venia-tops.html : LH Performance Expected 0.75 Actual 0.36, LH Best Practices Expected 1 Actual 0.92
https://pr-2478.pwa-venia.com/valeria-two-layer-tank.html : LH Performance Expected 0.8 Actual 0.48, LH Accessibility Expected 0.9 Actual 0.89, LH Best Practices Expected 1 Actual 0.92

[dpatil-magento]

Accidentally hit close instead of Merge previously, re-opened and merged.