shadow: update 4.6 -> 4.8
Drop two backports.
Remove 0001-useradd.c-create-parent-directories-when-necessary.patch
as upstream has addressed the issue:
https://github.com/shadow-maint/shadow/commit/
b3b6d9d77c1d18b98670b97157777bb74092cd69
Rebase the rest of the paches.
Add a patch to remove the check for validity of login shells
which does not work in our environment.
Disable sssd cache support as that needs Fedora-specific tooling.
Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
