[FIX]Storage fix with latest 2.1.x

radicale_odoo_storage/__init__.py

@@ -47,6 +47,12 @@ class Collection(BaseCollection):
 
     odoo = False
 
+    @classmethod
+    def static_init(cls):
+        """ Static init is usefull mainly for threading lock, not needed for
+        Odoo storage """
+        pass
+
     def __init__(self, path):
         """ Init function """
         self.__class__.odoo = Auth.odoo