## What this PR does
The kubelet version of tenant k8s clusters is baked into the worker VM
image. Previously, selecting any version of tenant k8s had an impact
only on the controlplane, the workers were fixed at v1.33. This patch
modifies the KubeadmConfigTemplate to attempt to download the
user-selected versions of kubelet and kubeadm and replace the baked-in
versions with those. If failing, the bootstrap continues with the
baked-in versions.
### Release note
```release-note
[kubernetes] Make kubelet versions on tenant k8s clusters' worker nodes
user-configurable.
```
Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>
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