reduce the now approximately identical pull-kubernetes-gce-e2e.* jobs down to one job on prow (the future) and the currently blocking pull-kubernetes-e2e-gce-etcd3
reduce the now approximately identical pull-kubernetes-gce-e2e.* jobs down to one job on prow (the future) and the currently blocking pull-kubernetes-e2e-gce-etcd3

GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid