Comment 0 for bug 1603217

Problem:
Testing Octavia on gate require huge amount of time because of nested virtualization problem.
We're building VM on already virtualized environment and Infra-team are not exposing CPU flags to vms so we can't use KVM in Nova.

Solution:
Nova-lxd driver is responsible for hosting VMs using LXC containers underneath.
With this solution we're not using KVM/Qemu anymore so testing will be mach faster.