Adding config option for routing_source

In the etc/nova/nova.conf

routing_source_ip={{nova.network.routing_source}}
Merge pull request #2 from EntropyWorks/master

Adding config option for nova routing_source
Restart instances after compute node reboot.
Merge pull request #10 from echohead/issue/10/restart-instances

configure nova to restart instances after compute node restart
Add a quantal image to glance by default.
Merge pull request #5 from echohead/issue/5/quantal-image

Add ubuntu image to glance by default
add `disable-openstack`:

disable-openstack is a simple tool which removes
all openstack service start scripts and reboots your machine.