fixes bz 1044155

This removes the redirect of stderr from the call to db_manage version
in  db_synced.  This allows the user to see error messages caused by bad
permissions on /var/log/nova/nova-manage.log.

See: https://bugzilla.redhat.com/show_bug.cgi?id=1044155
ensure correct permissions on $APP-manage.log

https://bugzilla.redhat.com/show_bug.cgi?id=1044155#c3
Merge pull request #8 from larsks/bz/1044155

Merging Bz/1044155 to (a) show errors when trying to determine database version and (b) fixing permissions on $APP-manage.log.