Step 1 : Create VM ubuntu 14.x (4vcpu, 8GB RAM, 100GB Disk)
Step 2 : Login as a non-root user
Step 3 : Install git
sudo apt-get update sudo apt-get install git
Step 4 : Git clone devstack project
git clone https://git.openstack.org/openstack-dev/devstack
Step 5: Checkout a stable release Code lines here.
git checkout [release-name/id]