Update test fixtures to use explicit run

Change-Id: I3060a2bf57cef10a5a7ec5299e3491f1f6751221
diff --git a/tests/fixtures/layouts/merge-failure.yaml b/tests/fixtures/layouts/merge-failure.yaml
index 7c5121c..3828a06 100644
--- a/tests/fixtures/layouts/merge-failure.yaml
+++ b/tests/fixtures/layouts/merge-failure.yaml
@@ -23,7 +23,7 @@
     name: gate
     manager: dependent
     failure-message: Build failed.  For information on how to proceed, see http://wiki.example.org/Test_Failures
-    merge-failure-message: "The merge failed! For more information..."
+    merge-failure-message: The merge failed! For more information...
     trigger:
       gerrit:
         - event: comment-added
@@ -49,16 +49,20 @@
 - job:
     name: base
     parent: null
+    run: playbooks/base.yaml
 
 - job:
     name: project-merge
     hold-following-changes: true
+    run: playbooks/project-merge.yaml
 
 - job:
     name: project-test1
+    run: playbooks/project-test1.yaml
 
 - job:
     name: project-test2
+    run: playbooks/project-test2.yaml
 
 - project:
     name: org/project