obuspa: Get data model schema present in DUT
- Obuspa required to register the schema present in DUT, in the current methods, for multi-instance objects the instance is only visible if at-least one object/instance present, this leads to anomaly in obuspa, when some objects getting created in run-time. e.g: Device.WiFi.AccessPoint.1.AssociatedDevice.
- This change will dump the complete schema irrespective of that node/object availability.