Finish up ELB changes from final merged spec

[basepi]

What does this pull request do?

The final merged spec removed the request ID for ELB triggers, and narrowed the service.origin.name. With this PR our implementation matches the current spec

Related issues

Closes #1622
Ref #1605 and #1609

[trentm]

LGTM

[ghost]

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• Start Time: 2022-08-30T17:58:55.537+0000

• Duration: 30 min 44 sec

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Test	Results
Failed	0
Passed	4974
Skipped	3338
Total	8312

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (66/66)	💚
Files	100.0% (225/225)	💚
Classes	100.0% (225/225)	💚
Lines	89.841% (17439/19411)	👍
Conditionals	77.279% (3187/4124)	👍 0.024