zuul: Add a devstack-platform-fedora-latest-virt-preview job

Building on I5c3e1b7b632fd73310c462530990cdb0e0c0ceea we can now add a
Fedora job using the virt-preview repo that will be used by Nova's
experimental queue.

Change-Id: Iad9d64912bb07f307e4897ece1621f275f1d5211

Author: lyarwood

.zuul.yaml

@@ -512,6 +512,16 @@
     nodeset: devstack-single-node-fedora-latest
     voting: false
 
+- job:
+    name: devstack-platform-fedora-latest-virt-preview
+    parent: tempest-full-py3
+    description: Fedora latest platform test using the virt-preview repo.
+    nodeset: devstack-single-node-fedora-latest
+    voting: false
+    vars:
+      devstack_localrc:
+        ENABLE_FEDORA_VIRT_PREVIEW_REPO: true
+
 - job:
     name: devstack-tox-base
     parent: devstack