Disable node automated updates by default

[hakman]

We discussed this for some time now and agreed it would be a good idea to disable automated updates for nodes and:

• minimise the risk that node updates disrupt the cluster
• reduce node bootstrap by almost 1 minute.

/cc @justinsb @rifelpet @ameukam

[hakman]

/test pull-kops-scenario-aws-karpenter

[hakman]

/test pull-kops-e2e-k8s-gce-ipalias

[hakman]

/assign @justinsb

[hakman]

@justinsb any chance you have some time to look at this?

[k8s-ci-robot]

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[hakman]

Replaced by #17708
/close

[k8s-ci-robot]

@hakman: Closed this PR.

In response to this:

Replaced by #17708
/close

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