Added 'tstamp_wrapper_dir' column field.

Signed-off-by: Cristiano Urban <cristiano.urban@inaf.it>

00-init.sql

@@ -38,6 +38,7 @@ CREATE TABLE Node (
     parent_relative_path   LTREE         default NULL,
     name                   VARCHAR       NOT NULL,
     os_name                VARCHAR       default NULL,
+    tstamp_wrapper_dir     VARCHAR       default NULL,
     type                   NodeType      NOT NULL,
     location_type          LocationType  default NULL,
     format                 VARCHAR       default NULL,