[ML] Initial serverless functional tests for ML

[jgowdyelastic]

Add serverless functional tests for each project.

Search
Opens the trained models page and checks that there are 4 models listed.

Observability
Creates a AD job and then navigates to the AD jobs list and checks that the job is listed.

Security
Creates a AD job and then navigates to the AD jobs list and checks that the job is listed.
Creates a DFA job and then navigates to the DFA jobs list and checks that the job is listed.
Navigates to the trained models page and checks that there are no trained models listed.

Also adds tests for each project to ensure that kibana search bar only lists the pages which are enabled.

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[pheyos]

LGTM

[darnautov]

❓ the identifier is quite misleading. why do we refer to Trained Models with nodesOverview id?

[jgowdyelastic]

nodesOverview is the ID which has been used in the default navigation for the model management page. I believe it's a leftover from when the model management page also listed node and memory usage information.
I have a note to correct it, but it'll touch a few files and is out of scope for this tests PR.

[jgowdyelastic]

navigateToArea is the name of an existing function in the non-serverless tests. I agree that it's an odd name, but I wanted it all to be consistent.

[darnautov]

LGTM

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 4ff9dea

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
ml	3.5MB	3.5MB	-5.0B

History

• 💛 Build #164568 was flaky 85e108c
• 💔 Build #164475 failed 6d829cc
• 💔 Build #164344 failed af68f9b
• 💚 Build #164052 succeeded 2a2e519
• 💚 Build #163608 succeeded 03ec7cc
• 💚 Build #163518 succeeded 772cf58

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

cc @jgowdyelastic

[peteharverson]

LGTM