dracut: reduce closure and suffix DRACUT_PATH

Implements a few usability changes for dracut framework by suffixing
rather than prefixing `DRACUT_PATH` (so that downstream consumers can
more easily override it) and reduce closure size by bundling fewer
default utilities in `DRACUT_PATH`.

Done per comments at https://github.com/NixOS/nixpkgs/pull/210075#discussion_r1088822274.

pkgs/os-specific/linux/dracut/default.nix

@@ -10,24 +10,17 @@
 , bash
 , kmod
 , binutils
-, busybox
 , bzip2
 , coreutils
 , cpio
 , findutils
-, glibc
 , gnugrep
 , gnused
 , gnutar
 , gzip
-, kbd
-, lvm2
 , lz4
 , lzop
-, procps
-, rng-tools
 , squashfsTools
-, systemd
 , util-linux
 , xz
 , zstd
@@ -76,23 +69,16 @@ stdenv.mkDerivation rec {
     wrapProgram $out/bin/dracut --prefix PATH : ${lib.makeBinPath [
       coreutils
       util-linux
-    ]} --prefix DRACUT_PATH : ${lib.makeBinPath [
+    ]} --suffix DRACUT_PATH : ${lib.makeBinPath [
       bash
       binutils
       coreutils
       findutils
-      glibc
       gnugrep
       gnused
       gnutar
-      kbd
-      lvm2
-      procps
-      rng-tools
-      squashfsTools
-      systemd
+      stdenv.cc.libc  # for ldd command
       util-linux
-      busybox
     ]}
     wrapProgram $out/bin/dracut-catimages --set PATH ${lib.makeBinPath [
       coreutils