Document BMO e2e on real hardware

[lentzi90]

The BMO e2e tests have been designed to work also on real hardware. We should check that it actually works, and document how to do it. I think this could fit well in the user-guide, targeted at contributors, but perhaps also as a way for users to check that BMO works with their hardware. A conformance test if you like.

From a high perspective, the process should look something like this:

1. Write kustomize overlays for Ironic and BMO (or deploy them manually). The e2e overlays we use in CI gives an example for how this could look like. See this and this.
2. Set up a Kubernetes cluster (e.g. using kind or minikube). The test framework can do this automatically, but it is likely that some special configuration is needed, in which case it is better to do it manually.
3. Write config file to adapt the e2e suite to the specific environment.
4. Run the tests!

[lentzi90]

/triage accepted
/cc @Rozzii

[metal3-io-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues will close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[tuminoid]

/remove-lifecycle stale

[metal3-io-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues will close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[Rozzii]

It is still on our wishlist
/help
/kind documentation
/lifecycle frozen

[metal3-io-bot]

@Rozzii:
This request has been marked as needing help from a contributor.

Please ensure the request meets the requirements listed here.

If this request no longer meets these requirements, the label can be removed
by commenting with the /remove-help command.

In response to this:

It is still on our wishlist
/help
/kind documentation
/lifecycle frozen

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.