The Nix store squashfs is stored inside the initrd instead of separately
(cherry picked from commit 976fd407796877b538c470d3a5253ad3e1f7bc68)
Signed-off-by: Domen Kožar <domen@dev.si>
As @bobvanderlinden suggests in #13585:
"Looks like that cleans things up quite a bit! Just one aesthetics note,
the boot tests could now be renamed from boot.bootBiosCdrom to
boot.biosCdrom in nixos/tests/boot.nix:L33.
That makes them more consistent with the other tests."
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
