Add path configuration file
Add path configuration file

This file is used by all scripts to find the directories for the files
they read or write. They find this file as "$TOP_DIR/config/paths".

Partial-Bug: 1312764
Implements: blueprint openstack-training-labs
Change-Id: Ia63b8489c66acf174f3b3850d24fd7c6108f59b4

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