k8s-cloud-builder: Build on kube-cross:v1.14.7-1 and v1.13.15-1
k8s-cloud-builder: Build on kube-cross:v1.14.7-1 and v1.13.15-1

Signed-off-by: Stephen Augustus <f96984fef9637085f0559f1484dfd4e99545cd6e@vmware.com>

kubernetes/release,kubernetes/release