Preload updated cirros image
Preload updated cirros image

We want to update the master branch of devstack to a new version of
cirros[1]. In order for the grenade upgrade check to pass on this patch,
we need to load the new image in the previous branch, i.e. here.

[1] https://review.openstack.org/166778

Co-Authored-By: Scott Moser <a546549d5d9f07bf2bb68f2090e57413e6aba263@ubuntu.com>
Change-Id: Iac9f108d947ff4a51f99c6e8ad9d1ac5b32c000a

neerja28/Devstack_GlusterFS,neerja28/Devstack_GlusterFS