Update test script to use microkernel for testing

The test script was using an Ubuntu image by default.

This was problematic when their mirrors were getting
hammered during the precise release.

This commit updates the script to use something
much smaller.

ext/nova.sh

@@ -5,12 +5,18 @@
 source /root/auth
 
 # get an image to test with
-wget http://uec-images.ubuntu.com/releases/11.10/release/ubuntu-11.10-server-cloudimg-amd64-disk1.img
+#wget http://uec-images.ubuntu.com/releases/11.10/release/ubuntu-11.10-server-cloudimg-amd64-disk1.img
 
 # import that image into glance
-glance add name="Ubuntu 11.10 cloudimg amd64" is_public=true container_format=ovf disk_format=qcow2 < ubuntu-11.10-server-cloudimg-amd64-disk1.img
+#glance add name="Ubuntu 11.10 cloudimg amd64" is_public=true container_format=ovf disk_format=qcow2 < ubuntu-11.10-server-cloudimg-amd64-disk1.img
 
-IMAGE_ID=`glance index | grep 'Ubuntu 11.10 cloudimg amd64' | head -1 |  awk -F' ' '{print $1}'`
+#IMAGE_ID=`glance index | grep 'Ubuntu 11.10 cloudimg amd64' | head -1 |  awk -F' ' '{print $1}'`
+
+wget https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64-disk.img
+
+glance add name='cirros image' is_public=true container_format=bare disk_format=qcow2 < cirros-0.3.0-x86_64-disk.img
+
+IMAGE_ID=`glance index | grep 'cirros image' | head -1 |  awk -F' ' '{print $1}'`
 
 # create a pub key
 ssh-keygen -f /tmp/id_rsa -t rsa -N ''