Crypt devices unsupported

[Alveel]

I'm not 100% sure if there would be any more implications, but would it be possible to add crypt to the list of supported devices? Like mpath got added a while ago, having a crypt device would be really nice as well.

Relevant lines here

If that sounds good, I can obviously make a pull request.

[Alveel]

Perhaps the same for LVM. Following https://access.redhat.com/articles/2106521, LVM can be stacked, however disktype=lvm is not accepted either :)