Use StoryBoard for workload-ref-archs
Use StoryBoard for workload-ref-archs

The Enterprise WG wants to start using StoryBoard for tracking their
own tasks, so set up a project on storyboard.openstack.org
corresponding to their openstack/workload-ref-archs repo. They have
no open bugs on Launchpad, so no need to import anything.

Change-Id: Ia6cb030fefee6590ec0c94470433f20dfc101ea2

openstack-infra/project-config,openstack-infra/project-config