Use pam_loginuid

This set the loginuid property of processes for auditing.
Manual: "mke2fs -j" -> mkfs.ext4
add openvpn config file to networkmanager service
Add a basic (currently failing) sanity check for btrfsProgs-in-initrd

Signed-off-by: Shea Levy <shea@shealevy.com>
Fix btrfs in the initrd.

With NixOS/nixpkgs@7761952d06d3e2c535f00d38796f98228b3946bb , btrfs requires libz and liblzo2

Signed-off-by: Shea Levy <shea@shealevy.com>
btrfsck doesn't respect any flags

Signed-off-by: Shea Levy <shea@shealevy.com>