Adds neutron scripts for training labs compute node

Adds neutron scripts for training labs which will install and configure
neutron on the compute node.

Change-Id: If5af1ea987545f062707c041d462524476fe55bf
Co-Authored-By: Roger Luethi <rl@patchworkscience.org>
Partial-Bug: 1312764
Implements: blueprint openstack-training-labs
Merge "Adds neutron scripts for training labs compute node"