Currently we use Devstack (http://devstack.org/) to build our lab environment.

Use Devstack's guide to install single VM OpenStack ( http://devstack.org/guides/single-vm.html)

localrc example. 

HOST_IP=
FLAT_INTERFACE=
FLOATING_RANGE=

ADMIN_PASSWORD=swordfish
MYSQL_PASSWORD=swordfish
RABBIT_PASSWORD=swordfish
SERVICE_PASSWORD=swordfish
SERVICE_TOKEN=tokentoken

ENABLED_SERVICES+=,heat,h-api,h-api-cfn,h-api-cw,h-eng

# Image's cache is in $TOP_DIR/files
IMAGE_URLS+=",http://fedorapeople.org/groups/heat/prebuilt-jeos-images/F17-x86_64-cfntools.qcow2"

# /etc/nova/nova.conf
EXTRA_OPTS=(force_config_drive=true libvirt_images_type=qcow2 force_raw_images=false)

# Logging
SCREEN_LOGDIR=/opt/stack/log/
LOGFILE=$SCREEN_LOGDIR/stack.sh.log                    

If you need to image builder only, then install only packages required to run KVM (see below).