python-blivet: Update to upstream version 0.17-1.

Changes since 0.16-1:

 - Used Python type instead of variable name (hamzy)
 - Fix detection of valid EFI system partition during autopart. (dlehman)

Full changelog can be found in the spec file in the package or at:

https://git.fedorahosted.org/cgit/blivet.git/tree/python-blivet.spec

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
python-nixpart: Update to new version 0.2.0.

This introduces the ability to mount filesystems (only). Also, the description
is now less kickstart specific as in the long term we want to move away from
kickstart syntax to Nix attribute sets.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>