Simply incorporate some of the boilerplate from hack/e2e.go into the
scripts in hack/e2e-suite.
Use environment variables with default values to allow overrides in
kubectl command line and to use a versioned package root.
Tested:
- Ran `go run hack/e2e.go -test` on a test cluster.
- Ran the test cases individually.
- Ran hack/e2e-suite/goe2e.sh -t Pods to confirm it takes arguments.
- Also fixed cluster/test-network.sh (which should be more and more irrelevant.)
What I really want is
https://github.com/GoogleCloudPlatform/kubernetes/issues/2953, but
haven't had a chance to code that yet. Maybe it's time. (Then I'd
remove the provider-specific test and just say "is it > 0.7.2, or does
it claim to be capable of something from the future?" The latter
covers the HEAD server case .. though just bumping the server version
immediately after release might also accomplish that, too.)