If you don't want cloud-init, you may need to get a few things
from config-drive because you may be operating on a cloud with no DHCP.
In that case, simply reading some values from config-drive and writing
out either DHCP or static network info, in addition to grabbing ssh keys
is helpful. Both Infra and bifrost want this for their images.
Co-Authored-By: Gregory Haynes <greg@greghaynes.net>
Change-Id: I2746ed256b9783eab058b803130d3ccac484eaeb
