overcloud-odl : add new image file definition
overcloud-odl : add new image file definition

Add new yaml file for creating the overcloud-odl
image with openstack-tripleo project.

Change-Id: I048e69e45c2006e033db071c8acc7f1c3cef456d
Closes-Bug: #1567408

openstack/tripleo-common,openstack/tripleo-common