gpu: Install packages for devkit

Introduce a new function to install additional packages into the
devkit flavor. With modprobe, we avoid errors on pod startup
related to loading nvidia kernel modules in the NVRC phase.
Note, the production flavor gets modprobe from busybox, see its
configuration file containing CONFIG_MODPROBE=y.

Signed-off-by: Manuel Huber <manuelh@nvidia.com>

tools/osbuilder/rootfs-builder/nvidia/nvidia_chroot.sh

@@ -147,6 +147,18 @@ install_nvidia_dcgm() {
 		datacenter-gpu-manager-exporter
 }
 
+install_devkit_packages() {
+	is_feature_enabled "devkit" || {
+		echo "chroot: Skipping devkit packages installation"
+		return
+	}
+
+	echo "chroot: Install devkit packages"
+
+	eval "${APT_INSTALL}" kmod
+	apt-mark hold kmod
+}
+
 cleanup_rootfs() {
 	echo "chroot: Cleanup NVIDIA GPU rootfs"
 
@@ -174,4 +186,5 @@ install_userspace_components
 install_nvidia_fabricmanager
 install_nvidia_ctk
 install_nvidia_dcgm
+install_devkit_packages
 cleanup_rootfs