setup-nvidia: Overlay host /lib/modules into devcontainer

So that we can pick-up kmods contained in sysexts (like zfs) and generate
complete module dependency information. I thought we could skip running depmod
for nvidia drivers because we manually insmod them, but nvidia's GPU operator
driver validation expects to be able to run modprobe - so we have to generate
them.

Signed-off-by: Jeremi Piotrowski <jpiotrowski@microsoft.com>

sdk_container/src/third_party/coreos-overlay/x11-drivers/nvidia-drivers/files/bin/setup-nvidia

@@ -67,7 +67,7 @@ function extract_nvidia_installer() {
 function run_nspawn_container() {
   echo Spawn system-nspawn container to install the NVIDIA drivers
 
-  sudo systemd-nspawn --keep-unit --register=no --read-only --volatile=overlay --image="${FLATCAR_ROOT_WORKDIR}/${FLATCAR_DEVELOPER_CONTAINER}" --bind="${FLATCAR_ROOT_WORKDIR}/${NVIDIA_WORKDIR}":/nvidia --bind=/usr/lib/nvidia/bin:/app/bin/ /app/bin/install-nvidia "$NVIDIA_DRIVER_BASENAME"
+  sudo systemd-nspawn --keep-unit --register=no --read-only --volatile=overlay --image="${FLATCAR_ROOT_WORKDIR}/${FLATCAR_DEVELOPER_CONTAINER}" --overlay=/usr/lib/modules::/usr/lib/modules --bind="${FLATCAR_ROOT_WORKDIR}/${NVIDIA_WORKDIR}":/nvidia --bind=/usr/lib/nvidia/bin:/app/bin/ /app/bin/install-nvidia "$NVIDIA_DRIVER_BASENAME"
 }
 
 function copy_nvidia_build_artifacts() {