[WIP] Enable IPv6 only kubernetes clusters

[aojea]

Reason for Change:

AKS just added support for dual-stack clusters, we should be able to deploy IPv6 only clusters too

Issue Fixed:

Fixes #1729

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

Kubernetes IPv6 only clusters can work on dual stack hosts, so this
PR is based on the dual stack feature, just using IPv6 addresses to
configure the kubernetes components.

Kubernetes doesn't use flags to enable IPv6, it simply works in
IPv6 if the components use IPv6

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All CLA requirements met.

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[aojea]

/cc @aramase @khenidak

I couldn't test it, I went through the changes introduced in the dual-stack feature and applied the same approach we took to implement IPv6 cluster using kind.

Basically you run an IPv6 only kubernetes cluster on top of dual-stack hosts.

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[aojea]

/close
duplicate of #2781