Emitter cron task: Inactive by default

data/job_runner_cron_task.xml

@@ -5,6 +5,7 @@
         <!-- Cron task to run jobs. -->
 
         <record id="xbus_emitter_job_runner_cron_task" model="ir.cron">
+            <field name="active" eval="False" />
             <field name="args">()</field>
             <field name="doall" eval="False" />
             <field name="function">send_jobs</field>