Add Zuulv3 native jobs for the dummy driver

- Split the existing "manila-tempest-minimal-dsvm-dummy"
  functional job into two jobs:
  * manila-tempest-plugin-dummy-no-dhss (DHSS=False)
  * manila-tempest-plugin-dummy-dhss (DHSS=True
  to take advantage of the zuul and tempest ansible
  roles available to us.
- Base these new jobs on a minimal devstack, that only
  runs manila and keystone and no other OpenStack services.
  This makes these tests run really fast, coupled
  with the fact that they're running against a no-op
  driver.
- Introduce a role to copy tempest configuration
  after orchestrating devstack because devstack's
  "test-config" hook [1] misbehaves when the base
  services are not enabled.

Depends-On: I4fd282673074887cada729b6e4491ee493e230cc
Change-Id: I4c9f552e6a495b3d3f9dd63c1657ea40a3f9033b
Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>
7 files changed