Arthuru: update tf-sync-repos.yaml

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Ia7cfd563dfd02f9c1051601668dc9103cb00e1c0
diff --git a/tf-sync-repos.yaml b/tf-sync-repos.yaml
index 3a83969..dea1af2 100644
--- a/tf-sync-repos.yaml
+++ b/tf-sync-repos.yaml
@@ -24,15 +24,20 @@
     triggers:
     - gerrit:
         server-name: review.trustedfirmware.org
+        trigger-on:
+        - ref-updated-event
         projects:
         - project-compare-type: PLAIN
           project-pattern: sandbox/arthur
           branches:
           - branch-compare-type: PLAIN
             branch-pattern: master
-        silent: true
-        trigger-on:
-        - ref-updated-event
+        - project-compare-type: PLAIN
+          project-pattern: sandbox/arthur-2
+          branches:
+          - branch-compare-type: PLAIN
+            branch-pattern: master
+        silent-start: true
     wrappers:
     - credentials-binding:
       - text: