The recent move to bare metal neutron agents brought the processes
spawned by each agent under the watch of SELinux policies. This
patch ensures that neutron can still start important daemons, such
as dnsmasq or haproxy, without causing SELinux AVCs.
Closes-Bug: 1742552
Change-Id: Id1ae9d2b43cd0fb4c38460501da24733b29566e2