Pre-download files
Pre-download files

This script pre-downloads Ubuntu packages and the CirrOS image needed
for an OpenStack installation.

Partial-Bug: 1312764
Implements: blueprint openstack-training-labs
Change-Id: Ia7d95a13aeb841b1f88deaf33a1aa081749776a8

harrisonfeng/training-guides,Nabs007/training-guides,Nabs007/training-guides,openstack/training-guides,openstack/training-guides,harrisonfeng/training-guides,harrisonfeng/training-guides,Nabs007/training-guides