Add support for using VMs instead of containers #12
Description
While we may want to keep ansible in a container (so that we can properly version it), running the tests in containers is currently causing some issues for systemd guests, a solution would be to support multiple "drivers" for starting test VMs.
Supported targets initially would be:
- docker
- qemu/kvm (Linux only)
- xhyve (OSX only)
- virtualbox
To be added later:
- vmware
- xen
- aws
- digitalocean