Remove the old way of post-CHO and enable time trigger on new post-CHO

Change-Id: I93796ecbaa0e3def513461cb50c389926cfc644d
diff --git a/jjb/OnosSystemTest/onos-test-pipeline.yaml b/jjb/OnosSystemTest/onos-test-pipeline.yaml
index d84820c..f52550e 100644
--- a/jjb/OnosSystemTest/onos-test-pipeline.yaml
+++ b/jjb/OnosSystemTest/onos-test-pipeline.yaml
@@ -379,7 +379,8 @@
          branch: 'master'
          stream: 'master'
          lftools-version: '<1.0.0'
-
+    triggers:
+      - timed: 'H/60 * * * *'
     pipeline-scm:
       script-path: '{jenkins-path}/CHO_Graph_Generator'
       scm: