start update_inventory_system_cache job

job launch was logged, but the actual task request was forgotten

inventory_provider/routes/jobs.py

@@ -37,6 +37,8 @@ def update():
     task_logger.debug(
         'launching task: '
         'inventory_provider.tasks.worker.update_inventory_system_cache')
+    app.send_task(
+        'inventory_provider.tasks.worker.update_inventory_system_cache')
 
     return Response("OK")