update readiness health check test to test audit events

[ameowlia]

Are you submitting this PR against the develop branch?

✅

What is this change about?

This adds a test for the new audit.app.process.ready and audit.app.process.not-ready events.

Please provide contextual information.

• CFF RFC: https://github.com/cloudfoundry/community/blob/main/toc/rfc/rfc-0020-readiness-healthchecks.md
• Tracker story: https://www.pivotaltracker.com/story/show/185799545
• Issue tracking all of the PRs in this effort: Emit audit.app.process.ready and audit.app.process.not-ready events capi-release#363

What version of cf-deployment have you run this cf-acceptance-test change against?

• This changes were tested against capi-release 1.169.0.
• This capi version is in cf-deployment v36.0.0.

Please check all that apply for this PR:

• introduces a new test --- Are you sure everyone should be running this test?
• changes an existing test
• requires an update to a CATs integration-config

Did you update the README as appropriate for this change?

• YES
• N/A

If you are introducing a new acceptance test, what is your rationale for including it CATs rather than your own acceptance test suite?

CATs should validate common operator workflows.
CATs is not a regression test suite.
CATs is run by every component team to validate their releases before promotion.

How many more (or fewer) seconds of runtime will this change introduce to CATs?

Less than 1!

What is the level of urgency for publishing this change?

• Urgent - unblocks current or future work
• Slightly Less than Urgent

Tag your pair, your PM, and/or team!

[ameowlia]

Don't merge until the new version of CAPI is released! I will update this PR when that occurs.

[ameowlia]

The new CAPI version is here and it is in cf-deployment. This is ready to be merged.

[ctlong]

@ameowlia it seems like the app.process.not-ready audit event is not being emitted for Windows Cells in CF-D CI. Can you think of a reason why?

Off the top of my head, I wonder if

• The timeout isn't long enough?
• We need to set some property in a component of the Windows Cell that we're not setting?