reverting node service change until protobuf changes are in place

daemon/core/emulator/emudata.py

@@ -74,7 +74,7 @@ class NodeOptions:
         self.canvas = None
         self.icon = None
         self.opaque = None
-        self.services = None
+        self.services = []
         self.config_services = []
         self.x = None
         self.y = None

daemon/core/services/coreservices.py

@@ -404,7 +404,7 @@ class CoreServices:
         :param services: names of services to add to node
         :return: nothing
         """
-        if services is None:
+        if not services:
             logging.info(
                 "using default services for node(%s) type(%s)", node.name, node_type
             )