Imports
- github.com/docker/machine/drivers/openstack
- github.com/docker/machine/libmachine/drivers
- github.com/docker/machine/libmachine/log
- github.com/docker/machine/libmachine/mcnflag
- github.com/rackspace/gophercloud
- github.com/docker/machine/libmachine/version
- github.com/rackspace/gophercloud/rackspace