This change adds support for libvirt provider. Please note that libvirt
doesn't support the "virtualbox" mount type, so an another MOUNT_TYPE
has to be provided while using libvirt. 9p works well.
Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
On many Linux distributions (including openSUSE) the OS env variable is
already used with value "Linux". This results in weird errors like:
==> .1: Box 'generic/Linux' could not be found. Attempting to find and install...
To avoid the conflict, use the more neutral and less likely to be taken
DISTRO variable.
Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
