Added local.sh script for devstack install.

Fixes blueprint:reddwarf-devstack-integration
(Integrate reddwarf into devstack -- under the reddwarf project)
  - Added a local.sh script that devstack can run that will install
    reddwarf.
  - This is a minimal install that includes everything needed to
    get a basic reddwarf-api and reddwarf-taskmanager up and running.
  - This doesn't yet include creating a guest image or booting up a
    guest image instance (use redstack for this for now).

Change-Id: Iad0f3fe3920ec086a96a7e506e0672a60f04f705
Merge "Added local.sh script for devstack install."