SAR-20 Change LoggingLevelDefault default to integer

Pogo would generate it as the integer `4`, so use that instead
of the enumeration to make code regeneration easier in future
(unfortunately we lose some readability now).

skabase/SKABaseDevice/SKABaseDevice.py

@@ -389,7 +389,7 @@ class SKABaseDevice(with_metaclass(DeviceMeta, Device)):
     )
 
     LoggingLevelDefault = device_property(
-        dtype='uint16', default_value=int(TangoLoggingLevel.INFO)
+        dtype='uint16', default_value=4
     )
 
     LoggingTargetsDefault = device_property(