Freeze the content of tuple

The content of a tuple could be unhashable so it must also be frozen.

issue10603
review367321002
(grafted from ed3ce1fab2ab275e27f3e31e68156f2259eb9c84)

--HG--
branch : 6.0

tryton/common/selection.py

@@ -145,7 +145,7 @@ def freeze_value(value):
     if isinstance(value, dict):
         return tuple(sorted((k, freeze_value(v))
                 for k, v in value.items()))
-    elif isinstance(value, (list, set)):
+    elif isinstance(value, (list, set, tuple)):
         return tuple(freeze_value(v) for v in value)
     else:
         return value