log celery.app.trace at INFO level

because this is the logger that shows task result

inventory_provider/logging_default_config.json

@@ -61,11 +61,16 @@
         },
         "inventory_provider.task": {
             "level": "DEBUG"
-        }
+        },
+        "celery.app.trace": {
+            "level": "INFO",
+            "handlers": ["console", "syslog_handler"],
+            "propagate": false
+          }
     },
 
     "root": {
-        "level": "WARNING",
+        "level": "INFO",
         "handlers": ["console", "syslog_handler"]
     }
 }
\ No newline at end of file