Build the binary with `go build conformance.go`, then run the conformance binary on a node candidate.

NewResourceCollector creates a resource collector object which collects resource usage periodically from Cadvisor.

Pre-fetch all images tests depend on so that we don't fail in an actual test.

NodeImageWhiteList is a list of images used in node e2e test.

One pod one container TODO: This should be migrated to the e2e framework.

Time series of resource usage.