[airos] add property netmode to converters

Author: edoput

netjsonconfig/backends/airos/converters.py

@@ -29,6 +29,10 @@ class AirOsConverter(BaseConverter):
     def should_run_forward(cls, config):
         return True
 
+    @property
+    def netmode(self):
+        return self.config.get('netmode', 'bridge')
+
 
 class Aaa(AirOsConverter):
     netjson_key = 'general'
@@ -40,10 +44,6 @@ def bridge(self):
         """
         return bridge(get_copy(self.netjson, 'interfaces', []))
 
-    @property
-    def netmode(self):
-        return self.netjson.get('netmode', 'bridge')
-
     @property
     def wireless(self):
         """