Updated openstack/openstack
Project: openstack-infra/devstack-gate  47e7f9fcd46526585b86b3ea62811674d79c3460

Set required devstack variables for Ironic+grenade

When sideways migrating from the fake nova driver, do not attempt to
exercise the base side of Grenade using Tempest and Javelin.  Also,
bump the number of VMs enrolled in the Ironic inventory to 3 to
facilitate Tempest concurrency.

Change-Id: I0dc1c1576ff3ff53d1de76af35e6a6f0e2738ac3