Split output from infofs program for size on whitespace.
Split output from infofs program for size on whitespace.

Splitting on ' ' only is not good enough for jfs_tune.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

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