Initial skeleton for devstack-tempest base job

Setup the initial folder and play to run tempest.
This simply runs tempest full for now, with not support for config
options.

Change-Id: I5a76dd23900a1b5fb1764fafd837d69baf9ed8b1
Depends-on: Iffe54fbccbccd68db08f79a1b51dd7f76dbff408
14 files changed