Description of problem:

Bug 1254639 - "engine-setup fails at second run",
Show in the setup log a message that need to be fixed:

===============================================================================
2015-08-24 08:07:04 DEBUG otopi.plugins.ovirt_engine_setup.ovirt_engine.upgrade.dbvalidations plugin.execute:940 execute-output: ['/usr/share/ovirt-engine/setup/dbutils/validatedb.sh', '--user=engine', '--host=localhost', '--port=5432', '--database=engine', '--log=/var/log/ovirt-engine/setup/ovirt-engine-setup-20150824080613-j3lju0.log'] stderr:
ERROR:  relation "group_attributes" does not exist
LINE 1: select  (group_id)  from group_attributes where  (group_id) ...
                                 ^
QUERY:  select  (group_id)  from group_attributes where  (group_id) IS NOT NULL and  (group_id)  not in (select group_id from groups);
CONTEXT:  PL/pgSQL function "fn_db_validate_fks" line 40 at EXECUTE statement
===============================================================================

From bug 1256214 (duplicate of bug 1254639), comment 1:
alonbl: "Sandro, you should probably throw exception that is human readable, this is not a debug, error is probably in stderr, and format should not be list/tuple."

Version-Release number of selected component (if applicable):
3.6.0-10