Pin versions of docker-ce, kubeadm, kubectl, kubelet when installing robot cluster
Pin versions of docker-ce, kubeadm, kubectl, kubelet when installing robot cluster

Pin versions of docker-ce, kubeadm, kubectl, kubelet when installing robot cluster to avoid accidental upgrades with `apt upgrade`.

Closes https://github.com/googlecloudrobotics/core/pull/39
https://github.com/googlecloudrobotics/core/pull/39

ORIGINAL_AUTHOR=oliver-goetz <o.goetz@sap.com>
GitOrigin-RevId: dceb0179387d491a33287f67f209742765a2a9dd
Change-Id: I50204c1042f2321ae397f74dc6df8a18d8a73861

googlecloudrobotics/core,googlecloudrobotics/core,googlecloudrobotics/core