Add the cirros 0.3.0 test image

It takes 60 seconds to boot, 40 seconds less than 0.3.1.
But 0.3.1 has curl with https support.
(cherry picked from commit d2cd21a3821a901f37a8bd4154858ff48a9a7e87)
Disable libvirt file injection

There is a problem with qemu-nbd where it never completes and hogs the cpu.
This feature is not needed as the keys etc can be got from the metadata
service.
(cherry picked from commit 41c020a9af644039bdd80c73349734117f946c4c)
Update dnsmasq playbook for neutron
(cherry picked from commit ad6d13d13d7c81c4d6f9ce99d6f510e82822e161)
Change nova vncserver_listen for live migrations
(cherry picked from commit fd2dfdeff76beda012b6ceaecb09718c55d0b1ce)
Add qemu-utils for creating cinder boot volumes
(cherry picked from commit b85c971e3bc9155ab9ed7ad27b138b606e1b7eca)
Fixup LBaaS for ml2