This is not usable through "make test-e2e-node", which (while feasible) would
be a bit pointless because the Kubernetes source could would still be needed
for the make rules.
Instead, "kubetest2 noop -test=node" gets extended to invoke `e2e_node.test
remote` with flags that tell e2e_node.test where to find the binaries and
flags that were provided by the caller of kubetest2.
