replace_kernel installs "recommends" dependencies in minimized images

[Stefan Hammer]

Generally, minimized images don't contain "recommends" dependencies, to keep the image small and optimized.

However, I noticed recently when calling `replace_kernel` to install a cloud kernel on a minimized image, "recommends" dependencies are always installed.

As a specific example,

    replace_kernel "${scratch_d}" linux-oracle

Will install linux-modules-extra-$VER-oracle, even though linux-modules-extra-$VER-oracle is only a "recommends"

    $ apt show linux-image-oracle
    Package: linux-image-oracle
    Version: 6.8.0-1008.8
    Priority: optional
    Section: kernel
    Source: linux-meta-oracle
    Origin: Ubuntu
    Maintainer: Ubuntu Kernel Team <email address hidden>
    Bugs: https://bugs.launchpad.net/ubuntu/+filebug
    Installed-Size: 13.3 kB
    Provides: spl-modules (= 2.2.2-0ubuntu9), virtualbox-guest-modules (= 6.8.0-1008), wireguard-modules (= 1.0.0), zfs-modules (= 2.2.2-0ubuntu9)
    Depends: linux-image-6.8.0-1008-oracle
    Recommends: linux-modules-extra-6.8.0-1008-oracle
    Download-Size: 6,282 B
    APT-Sources: http://us.archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages
    Description: Linux kernel image for Oracle systems.
    This package will always depend on the latest kernel image available
    for Oracle systems.

This adds 112 MB of modules to a minimized image that are not required.