Update Praefect scenario to include Gitaly storage
Updates the Praefect scenario to include Gitaly storage. Used to test the use case of migrating a project to Praefect that was originally created on a Gitaly (non-Praefect) node.
Part of gitlab-org/quality/testcases#837 (closed)
Depends on !470 (merged)
Edited by Mark Lapierre