Add selector for role jobs

Change-Id: If8acf38bb78bdccf1f62d1aade408332ff54bf09
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 5442190..07e47a1 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -9,9 +9,13 @@
     vars:
       role_name: ensure-hatch
       ensure_hatch_version: 1.14.0
+    files:
+      - ^roles/ensure-hatch/
 
 - job:
     name: zuul-jobs-test-ensure-vault
     parent: zuul-jobs-generic-test
     vars:
       role_name: ensure-vault
+    files:
+      - ^roles/ensure-vault/