Project sample to deploy on openstack our infraestructure.
vagrant plugin install vagrant-openstack-provider
vagrant up --provider=openstack
tar cvzf openstack.box ./metadata.json ./Vagrantfile
#images loaded in openstack http://docs.openstack.org/image-guide/content/ch_obtaining_images.html
Can be downloaded from ubuntu cloud
http://cloud-images.ubuntu.com/trusty/current/
Scroll to the bottom and get a disk1.img of AMD64, then load them into glance via web selecting AMI type.