Virtualbox on Ubuntu 20.04

Hi folks,

I've been setting up a CI pipeline for my company and Linux VMs have gone well so far. I suspect I will be fine with Windows too but I wanted to know the criteria for testing VMs on your plugin. I'm happy to raise PRs and so on. I have access to some pretty meaty hardware which means I can test different things if needed and I think I would have the support of my team if I did so.

My current environment is as follows:

- Ubuntu 20.04
- Virtualbox 6.1.18r142142
- Vagrant 2.2.14
- Molecule 3.2.3
- Ansible 2.10.6
- Python 3.6

I have my full setup documented (as a precursor to an ansible role further down the line) and can go into more detail if needed.

The issue names no repository files, tests, or entry points to inspect. Start by reviewing the plugin's current support criteria and the documented Ubuntu 20.04, VirtualBox, Vagrant, Molecule, Ansible, and Python setup; the issue does not define a concrete change or a clear completion condition.

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