[Fedora] Install dnsmasq on n-cpu less host

The libvirt-daemon-driver-network pulls the dnsmasq,
on hosts where the n-cpu installed with libvirt backend.

But nothing installs it if you have only n-net or q-dhcp,
on the given hosts.

dnsmasq-utils does not depends on dnsmasq,
because it can work with other local dhcp servers.

Change-Id: I17a769df3bd51ca608c1728e892009125eea42ed
Merge "[Fedora] Install dnsmasq on n-cpu less host"
Merge branch 'master' of https://github.com/openstack-dev/devstack