[8.x] [eem] rename fields to snake case (#195895)

[kibanamachine]

Backport

This will backport the following commits from main to 8.x:

• [eem] rename fields to snake case (#195895)

Questions ?

Please refer to the Backport tool documentation

[elasticmachine]

Pinging @elastic/obs-ux-infra_services-team (Team:obs-ux-infra_services)

[github-actions]

🤖 GitHub comments

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Just comment with:

• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 5b04833
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Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
@kbn/entities-schema	44	43	-1

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
inventory	218.7KB	218.6KB	-53.0B
investigateApp	483.7KB	483.7KB	-25.0B
securitySolution	20.7MB	20.7MB	+2.0B
total			-76.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
observabilityShared	75.0KB	75.1KB	+7.0B

Unknown metric groups

API count

id	before	after	diff
@kbn/entities-schema	44	43	-1

cc @klacabane