Add module name to base manager.

gns3server/modules/base_manager.py

@@ -49,6 +49,16 @@ class BaseManager:
             cls._instance = cls()
         return cls._instance
 
+    @property
+    def module_name(self):
+        """
+        Returns the module name.
+
+        :returns: module name
+        """
+
+        return self.__class__.__name__
+
     @property
     def port_manager(self):
         """