zuul: Use horizon-dsvm-tempest-plugin job from horizon

Change-Id: I3c6109df15480d5fbee1d420d573a4f529022d91
diff --git a/.zuul.yaml b/.zuul.yaml
new file mode 100644
index 0000000..0e73686
--- /dev/null
+++ b/.zuul.yaml
@@ -0,0 +1,9 @@
+---
+- project:
+    name: openstack/tempest-horizon
+    check:
+      jobs:
+        - horizon-dsvm-tempest-plugin
+    gate:
+      jobs:
+        - horizon-dsvm-tempest-plugin