openstack: neutron: renamed quantum to neutron

Renamed quantum to neutron in all references to packages and
configuration files in order to support the new naming scheme that the
OpenStack Networking project uses.

Bug-Url: https://bugzilla.redhat.com/1019818
Change-Id: Ia0629b2f3693f89bfd5fa1bbe16f2f029617b3d9
Signed-off-by: Mike Kolesnik <mkolesni@redhat.com>