Explicitly download linux/amd64 kubernetes client binaries
Explicitly download linux/amd64 kubernetes client binaries

platform/arch-specific binaries (such as kubectl) are no longer
included in kubernetes.tar.gz as of v1.5.0; there is instead
 a clusters/get-kube.sh script that can be used, but it's unclear
to me what set of env vars to use to get it to just stage binariess
locally vs. uploading to gcs and creating a kube-up cluster

so for now, here's a hackish attempt that assumes linux/amd64 and
known locations

samsung-cnct/kraken-ci-jobs