Fix Housekeeper-PerCommit

BUG=skia:5563
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2183023004

Review-Url: https://codereview.chromium.org/2183023004
diff --git a/infra/bots/housekeeper_skia.isolate b/infra/bots/housekeeper_skia.isolate
index db0d579..4172bae 100644
--- a/infra/bots/housekeeper_skia.isolate
+++ b/infra/bots/housekeeper_skia.isolate
@@ -1,5 +1,6 @@
 {
   'includes': [
     'skia_repo.isolate',
+    'swarm_recipe.isolate',
   ],
 }