8e48646eb6
With the new oslo-privsep library, there is now a privsep-helper command that is used to escalate privledges. This command needs to be runnable by the nova user via sudo without a password. The old rootwrap command is still used as well, so for now we need to have both. Change-Id: I3bf334bf9498f67a1e91041d1d50870964e6141c