I've been using this minimal, manually-configured IceHouse virtual setup
based on this notes[1] for a few weeks as a virtual test environment
reasonably successfully.
This may not be issue-free, but if anyone ever dares to try this,
comments/feedforward welcome.
And, here[2] the resulting configuration files (although, I've posted
this here a couple of times, but posting again for completness' sake).
[1]
http://kashyapc.fedorapeople.org/virt/openstack/rdo/Minimal-OpenStack-Ice...
[2]
http://kashyapc.fedorapeople.org/virt/openstack/rdo/IceHouse-Nova-Neutron...
--
/kashyap