Add more information on local.conf files
Add more information on local.conf files

This change set adds some additional background information on the
local.conf files.  This was feedback from the field that this will help
developers as they on board for the project.

Change-Id: I0e69bb01e497bfd29817559021cdafeaf0248cad

stackforge/nova-powervm,openstack/nova-powervm,openstack/nova-powervm,stackforge/nova-powervm