[AO][SERVERLESS] Enable tests after swapping to ESS

[fkanout]

Summary

It fixes #165569

Checklist

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• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

Risk Matrix

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Before closing this PR, invite QA, stakeholders, and other developers to identify risks that should be tested prior to the change/feature release.

When forming the risk matrix, consider some of the following examples and how they may potentially impact the change:

Risk	Probability	Severity	Mitigation/Notes
Multiple Spaces—unexpected behavior in non-default Kibana Space.	Low	High	Integration tests will verify that all features are still supported in non-default Kibana Space and when user switches between spaces.
Multiple nodes—Elasticsearch polling might have race conditions when multiple Kibana nodes are polling for the same tasks.	High	Low	Tasks are idempotent, so executing them multiple times will not result in logical error, but will degrade performance. To test for this case we add plenty of unit tests around this logic and document manual testing procedure.
Code should gracefully handle cases when feature X or plugin Y are disabled.	Medium	High	Unit tests will verify that any feature flag or plugin combination still results in our service operational.
See more potential risk examples

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[apmmachine]

🤖 GitHub comments

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Just comment with:

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

[kibana-ci]

💔 Build Failed

• Buildkite Build
• Commit: 2a54461
• Interpreting CI Failures

Failed CI Steps

• FTR Configs #13
• Serverless Observability Tests
• Serverless Search Tests
• Serverless Security Cypress Tests #3
• Serverless Security Cypress Tests #5
• Serverless Security Cypress Tests #7
• Serverless Security Cypress Tests #13

Test Failures

• [job] [logs] FTR Configs #13 / maps app map saved object management read "after all" hook for "should override time stored with map when query is provided in global state"
• [job] [logs] FTR Configs #13 / maps app map saved object management read "before all" hook for "should update global Kibana time to value stored with map"
• [job] [logs] Serverless Search Tests / serverless common UI home page has project header
• [job] [logs] Serverless Observability Tests / Serverless observability API - feature flags Threshold Rule Threshold rule - DOCUMENTS_COUNT - FIRED Rule creation should set correct information in the alert document

Metrics [docs]

Async chunks

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

id	before	after	diff
securitySolution	12.6MB	12.6MB	+6.4KB
securitySolutionServerless	260.1KB	266.4KB	+6.2KB
total			+12.6KB

Page load bundle

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

id	before	after	diff
securitySolutionServerless	39.7KB	39.7KB	+1.0B

History

• 💔 Build #155997 failed c2870ab

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream