as some provider binaries probably need additional environment variables
set (e.g kubernetes as client-go depends on KUBERNETES_SERVICE_ vars) it
should be possible to define a list of environment variables which
should get bypassed into the provider binary execution
When deleting a VM, we try to force stop it. If the VM is already stopped,
LXD will return an error. Unfortunately, we can't import the drivers package
from LXD without also pulling in a bunch of linux specific CGO dependencies
which we want to avoid.
Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>