Improve developer experience for CA E2E tests by using kwok locally

[Choraden]

Problem

Right now, the cluster-autoscaler E2E test scripts are pretty much locked into GCE, which works fine for Prow jobs since they have plenty of GCP projects to play with, but it’s a total drag for local development.

Proposed solution

Waiting on cloud infrastructure every time you want to run a test is a huge time-sink. To fix this, we could leverage a KWOK (Kubernetes Without Kubelet) cluster to make the whole setup much faster and more lightweight. There’s already a POC for this over at PR #8945 by @norbertcyran that shows how we can streamline the process.

[Choraden]

/area cluster-autoscaler
/kind cleanup