Remove all dependent devices of san device becoming multipath (#1058939)
Remove all dependent devices of san device becoming multipath (#1058939)

Also change the format to multipath after the devices are removed,
not before.

Resolves: rhbz#1058939

AdamWill/blivet,rhinstaller/blivet,vpodzime/blivet,jkonecny12/blivet,dwlehman/blivet,rhinstaller/blivet,vojtechtrefny/blivet,rvykydal/blivet,AdamWill/blivet,rvykydal/blivet,dwlehman/blivet,vojtechtrefny/blivet,jkonecny12/blivet,vpodzime/blivet