fix choosing priority device causing bootloader crash (bnc#890204)
move md2partitions method and add tests for it
rubify method Md2Partitions
add method to get real disks for partition
fix assigning priority disks to device map for md raid (bnc#890246)
releasE
spec imrpovements
Merge pull request #135 from yast/fix_priority_device

Fix priority device