Added 'tape_pool' column to 'storage' table.

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

00-tables.sql

@@ -21,6 +21,7 @@ CREATE TABLE storage (
     storage_type      StorageType   NOT NULL,
     base_path         VARCHAR       default NULL,
     hostname          VARCHAR       NOT NULL,
+    tape_pool         VARCHAR       default NULL,
     PRIMARY KEY (storage_id)
 );