Improvements to the E2E Test utilities

[shmuelk]

What type of PR is this?
/kind test

What this PR does / why we need it:
This PR enables the passing of a Kubernetes context into the End to End test utilities.

The llm-d-inference-scheduler will use to enable running End to end tests on pre-existing clusters. There are requests for this capability downstream from the llm-d-inference-scheduler.

In addition a minor change was made to return the kind and name of created objects. This is needed in the llm-d-inference-scheduler to enable it to cleanup after End to end tests run on pre-existing clusters.

Does this PR introduce a user-facing change?:
NONE

[k8s-ci-robot]

@shmuelk: The label(s) kind/test cannot be applied, because the repository doesn't have them.

In response to this:

What type of PR is this?
/kind test

What this PR does / why we need it:
This PR enables the passing of a Kubernetes context into the End to End test utilities.

The llm-d-inference-scheduler will use to enable running End to end tests on pre-existing clusters. There are requests for this capability downstream from the llm-d-inference-scheduler.

In addition a minor change was made to return the kind and name of created objects. This is needed in the llm-d-inference-scheduler to enable it to cleanup after End to end tests run on pre-existing clusters.

Does this PR introduce a user-facing change?:
NONE

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-sigs/prow repository.

[netlify]

✅ Deploy Preview for gateway-api-inference-extension ready!

Name	Link
🔨 Latest commit	e667548
🔍 Latest deploy log	https://app.netlify.com/projects/gateway-api-inference-extension/deploys/6914b0089c5f480008d53489
😎 Deploy Preview	https://deploy-preview-1853--gateway-api-inference-extension.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[nirrozenbaum]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nirrozenbaum, shmuelk

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [nirrozenbaum]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment