Added Basic Install Training Guide

Added Network and Compute Node basic-install guide for Training Labs.
Currently updated for installing OpenStack Havana, these installation
gudies are meant for training labs but can be used as a replacement to
basic-install guide.

bp/training-manuals

Change-Id: I114218447ce5e8ea4bbe7c0b21915d69b54b92bd
Merge "Added Basic Install Training Guide"