option to add force schedulers

templates/buildbot/master.cfg.j2

@@ -118,4 +118,11 @@ c['schedulers'].append(schedulers.SingleBranchScheduler(
                             treeStableTimer=5,
                             builderNames=['{{builder_name}}']))
 
+{% if  builder.force_scheduler | default(false) %}
+c['schedulers'].append(schedulers.ForceScheduler(
+  name="force-{{builder_name}}",
+  builderNames=["hello-world"],
+))
+{% endif %}
+
 {% endfor %}