enabled to select the net-id of quantum when you boot the instance.

I enabled to select the net-id of quantum when you boot instances.

<http://docs.openstack.org/api/openstack-compute/2/content/CreateServers.html>

This OpenStack API Guide does not contain about booting with net-id of quantum. 
So I checked API by executing the 'nova boot --nic' command. 

and This patch also enabled to select 'v4-fixed-ip' and 'port-id'.

I did test with mock and real OpenStack router of folsom (2012.2.1) release.

If you boot with fog like this, you can select the net-id.

    @compute.create_server('fogtest05', image_id, flavor_id, {'net_id' => uuid, 'v4_fixed_ip' => ip, 'port_id' => port})

or

    @compute.create_server('fogtest05', image_id, flavor_id, {'net_id' => uuid})

Best Regards from Tokyo. :D