Enable version switcher on docs site

[divoxx]

Running minikube start --vm-driver=kvm2 without docker-machine-driver-kvm2 fails, as expected, but the new documentation URL does not provide installation steps for the driver.

Specifically, this page does not provide any information on how to install docker-machine-driver-kvm2, nor a download link.

[divoxx]

Sorry, I just realized that the new version 1.4.0 automatically downloads the driver. I was on 1.3.x.

Still, it might be good to keep a section in the documentation for people running older versions.

[tstromberg]

This is indeed a place where we fail users by not showing the version switcher.

[medyagh]

we still need help on making docs per version.

[fejta-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[prasadkatti]

#6921 is a dup of this one.

[fejta-bot]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
Rotten issues close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle rotten

[tstromberg]

After speaking with the Kubernetes docs folks, this is a fairly big undertaking. New Netlify sites will need to be manually created per version, at the moment.