Up k8s version to latest 1.13 release
Up k8s version to latest 1.13 release

This prevents a slew of install time dependency errors when
using CentOS7 as the base image in vagrant.

Signed-off-by: ShyamsundarR <a66bd9d22fa4c9ed39b8c456e41d73cd52b5e2f8@redhat.com>

JohnStrunk/k8s-cluster