Arthur: Trigger arthur-tf-sync-repos on tag creation

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: I389e713a619dc3d56da52ec3b70d9b4a65f74144
diff --git a/arthur-tf-sync-repos.yaml b/arthur-tf-sync-repos.yaml
index 667663c..4acd0ec 100644
--- a/arthur-tf-sync-repos.yaml
+++ b/arthur-tf-sync-repos.yaml
@@ -34,6 +34,8 @@
             branch-pattern: master
           - branch-compare-type: PLAIN
             branch-pattern: branch-1
+          - branch-compare-type: REG_EXP
+            branch-pattern: refs/tags/tag-.*
         silent-start: true
     wrappers:
     - credentials-binding: