fixes parsing of new config settings in source_base

Author: bb-Ricardo

module/sources/common/source_base.py

@@ -267,11 +267,11 @@ def add_update_interface(self, interface_object, device_object, interface_data,
         """
 
         disable_vlan_sync = False
-        if hasattr(self, "disable_vlan_sync"):
-            disable_vlan_sync = self.disable_vlan_sync
+        if "disable_vlan_sync" in self.settings:
+            disable_vlan_sync = self.settings.disable_vlan_sync
 
         ip_tenant_inheritance_order = None
-        if hasattr(self.settings, "ip_tenant_inheritance_order"):
+        if "ip_tenant_inheritance_order" in self.settings:
             ip_tenant_inheritance_order = self.settings.ip_tenant_inheritance_order
 
         if not isinstance(interface_data, dict):