## Summary
Part of https://github.com/elastic/kibana-team/issues/1271
This PR introduces the first set of end to end integration test for the
inference APIs, and the tooling required to do so (see issue for more
context)
- Add a dedicated pipeline for ai-infra GenAI tests. pipeline is
triggered when:
- genAI stack connectors, or ai-infra owned code is changed
- when the `ci:all-gen-ai-suites` label is present on a PR
- on merge
- adapt the `ftr_configs.sh` script to load GenAI connector
configuration from vault when a specific var env is set
- create the `@kbn/gen-ai-functional-testing` package, which for now
only contains utilities to load the GenAI connector configuration in FTR
tests
- Add FTR integration tests for the `chatComplete` API of the
`inference` plugin
---------
Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
