[Cloud Posture] Dashboard initial FTR

[JordanSh]

Resolves #146950

Summary

Lays out the foundation for CSP dashboard FTRs. for now, only one test is implemented, checking for an accurate posture score. the rest of the dashboard tests could rely on the existing infrastructure once this is merged.

[elasticmachine]

Pinging @elastic/kibana-cloud-security-posture (Team:Cloud Security)

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 17875cf

Failed CI Steps

• FTR Configs #8

Test Failures

• [job] [logs] FTR Configs #8 / maps app geojson vector layer - es geo grid source geo_point geoprecision - requests should not rerequest when pan changes do not move map view area outside of buffer

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
cloudSecurityPosture	186.4KB	186.6KB	+158.0B

Unknown metric groups

ESLint disabled line counts

id	before	after	diff
securitySolution	432	435	+3

Total ESLint disabled count

id	before	after	diff
securitySolution	512	515	+3

History

• 💚 Build #121110 succeeded badbb7b
• 💔 Build #120777 failed 06c42bf
• 💔 Build #120738 failed f092a9e

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

cc @JordanSh