removed service load methids, since they are no longer used, added way for custom service load code to facilitate the unique docker service case

daemon/core/service.py

@@ -138,7 +138,9 @@ class ServiceManager(object):
             module = importlib.import_module(import_statement)
             members = inspect.getmembers(module, lambda x: _is_service(module, x))
             for member in members:
-                cls.add(member[1])
+                clazz = member[1]
+                clazz.on_load()
+                cls.add(clazz)
 
 
 class CoreServices(ConfigurableManager):
@@ -943,6 +945,10 @@ class CoreService(object):
         """
         self._custom = True
 
+    @classmethod
+    def on_load(cls):
+        pass
+
     @classmethod
     def getconfigfilenames(cls, nodenum, services):
         """