18278: Stop specifying a k8s version on GKE. Arvados-DCO-1.1-Signed-off-by: Ward Vandewege <ward@curii.com>
16430: Refactor to share code between the GKE and Minikube tests. Arvados-DCO-1.1-Signed-off-by: Ward Vandewege <ward@jhvc.com>
16429: add GKE integration test Arvados-DCO-1.1-Signed-off-by: Ward Vandewege <ward@jhvc.com>