Use the default md metadata version even for "bootable" arrays.
Use the default md metadata version even for "bootable" arrays.

We used to use v1.0 but that was specifically because grub1 couldn't
understand v1.1 or later. Now that we've moved to grub2 this is no
longer necessary.

Related: rhbz#1061711

dwlehman/blivet,dwlehman/blivet