Removing ownership option for logrotate.conf

After separting supervdsm log to external file, and that supervdsm uses
the same logrotate configuration, we need to omit this option to keep
supervdsm.log rotated without changing the ownership of the file.

Change-Id: I56eb44152008824d06ea205171f96e26edc7eb78
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/13154
Reviewed-by: Timothy Asir <tjeyasin@redhat.com>
Tested-by: Timothy Asir <tjeyasin@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>