[FIX] base: ir_config_parameter increase database.secret entropy

As this key is secret, does not leak half of it through `database.uuid`
key (which is public)

openerp/addons/base/ir/ir_config_parameter.py

@@ -33,7 +33,7 @@ from openerp.tools import misc, config
 A dictionary holding some configuration parameters to be initialized when the database is created.
 """
 _default_parameters = {
-    "database.secret": lambda: (str(uuid.uuid1()), ['base.group_erp_manager']),
+    "database.secret": lambda: (str(uuid.uuid4()), ['base.group_erp_manager']),
     "database.uuid": lambda: (str(uuid.uuid1()), []),
     "database.create_date": lambda: (datetime.datetime.now().strftime(misc.DEFAULT_SERVER_DATETIME_FORMAT), ['base.group_user']),
     "web.base.url": lambda: ("http://localhost:%s" % config.get('xmlrpc_port'), []),