Update test fixtures to use explicit run

Change-Id: I3060a2bf57cef10a5a7ec5299e3491f1f6751221
diff --git a/tests/fixtures/layouts/job-variants.yaml b/tests/fixtures/layouts/job-variants.yaml
index de99e8a..356034f 100644
--- a/tests/fixtures/layouts/job-variants.yaml
+++ b/tests/fixtures/layouts/job-variants.yaml
@@ -20,6 +20,7 @@
       nodes:
         - name: controller
           label: base
+    run: playbooks/base.yaml
 
 - job:
     name: python27
@@ -33,6 +34,7 @@
       nodes:
         - name: controller
           label: new
+    run: playbooks/python27.yaml
 
 - job:
     name: python27
@@ -53,6 +55,7 @@
       - stable/essex
     pre-run: py27-essex-pre
     post-run: py27-essex-post
+    run: playbooks/python27.yaml
 
 - project:
     name: org/project