setting the timers for master builds

Change-Id: I0e8a4138eb724ab914caf99cfcba1d7118e3a78c
diff --git a/jjb/cord-test/att-workflow.yaml b/jjb/cord-test/att-workflow.yaml
index fd78119..edc8e62 100644
--- a/jjb/cord-test/att-workflow.yaml
+++ b/jjb/cord-test/att-workflow.yaml
@@ -53,7 +53,7 @@
          branch: 'master'
          Jenkinsfile: 'Jenkinsfile-attworkflow-build'
          oltDebVersion: 'openolt-master.deb'
-         time: '9'
+         time: '0 */3 * * *'
 
       # flex pod1 with olt/onu - seba-1.0/cord-6.1 release
       - 'build_pod_timer':