Revert "[ci.yaml] Move roller to blocking (flutter#28134)" (flutter#28143)

Casey Hillers · web-flow · commit 2b0ef0a7013c · 2021-08-17T14:27:02.000-07:00
diff --git a/.ci.yaml b/.ci.yaml
@@ -330,5 +330,6 @@ targets:
     scheduler: luci
 
   - name: Linux ci_yaml engine roller
+    bringup: true
     recipe: infra/ci_yaml
     scheduler: luci
