Add script to create an akanda raw image

This script should used to provision a qcow2 image to create
an akanda raw image to be used for develompment.

Change-Id: I93d82b66d83a6d8fbca743d4dbd38d98cdf16223
Signed-off-by: Rosario Di Somma <rosario.disomma@dreamhost.com>
Merge pull request #19 from rodis/feature/create-akanda-raw

Add script to create an akanda raw image