Disable IPv6 support for canal's calico-node (#5684)

This implements the same behavior as https://github.com/kubernetes-sigs/kubespray/blob/a15a0b5eb954c29636b4257463ef29ab2f5a191c/roles/network_plugin/calico/templates/calico-node.yml.j2

More info: https://github.com/projectcalico/felix/issues/1447