send tab key to skip RAID name input field

yast-storage 3.0.5 added a field to support named raids https://github.com/yast/yast-storage/commit/88e701f11cd79c59ec1984ebe8e09853b8b3d4c0 , send a tab key to skip this field. After that, softraid partition testing would be pass, ref. see http://opensuseqa.suse.de/viewimg/show/openSUSE-13.1-DVD-i586-Build0023-RAID5/partitioning/8 fail screenshot