[ci.yam] Add roller dry run to presubmit (flutter#28122)

Casey Hillers · web-flow · commit e54191d1c99c · 2021-08-17T09:37:02.000-07:00
diff --git a/.ci.yaml b/.ci.yaml
@@ -331,6 +331,5 @@ targets:
 
   - name: Linux ci_yaml engine roller
     bringup: true
-    presubmit: false
     recipe: infra/ci_yaml
     scheduler: luci
