Add Ironic related projects to Nimble tempest gate
Add Ironic related projects to Nimble tempest gate

This adds ironic basic configurations in Nimble tempest
job defination, as we need to enable ironic plugin when
installing the devstack env.

Change-Id: Icfe19a39bd2e2c82a233aea59ebd52f27aa6497a

Tesora/tesora-project-config,openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config