[Bug 2068026] [NEW] initramfs-tools hook does not support zstd-compressed kernel modules

[Benjamin Drung]

Public bug reported:

librem-ec-acpi-dkms in librem-ec-acpi uses:

```
    for kmod in $(find "${MODULESDIR}/${dir}" ${exclude:-} -name "$pattern*.ko" -print); do
        manual_add_modules $(basename ${kmod} .ko)
    done
```

vmxnet in open-vm-tools uses:

```
if find "${DESTDIR}"/lib/modules -name pcnet32.ko >/dev/null; then
	manual_add_modules vmxnet
fi
```

Ubuntu 24.04 (noble) ships kernel modules compressed (e.g.
pcnet32.ko.zst) and those snippets will not find these compressed
modules.

** Affects: librem-ec-acpi (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: open-vm-tools (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: open-vm-tools (Ubuntu)
   Importance: Undecided
       Status: New

** Package changed: initramfs-tools (Ubuntu) => librem-ec-acpi (Ubuntu)

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https://bugs.launchpad.net/bugs/2068026

Title:
  initramfs-tools hook does not support zstd-compressed kernel modules

Status in librem-ec-acpi package in Ubuntu:
  New
Status in open-vm-tools package in Ubuntu:
  New

Bug description:
  librem-ec-acpi-dkms in librem-ec-acpi uses:

  ```
      for kmod in $(find "${MODULESDIR}/${dir}" ${exclude:-} -name "$pattern*.ko" -print); do
          manual_add_modules $(basename ${kmod} .ko)
      done
  ```

  vmxnet in open-vm-tools uses:

  ```
  if find "${DESTDIR}"/lib/modules -name pcnet32.ko >/dev/null; then
  	manual_add_modules vmxnet
  fi
  ```

  Ubuntu 24.04 (noble) ships kernel modules compressed (e.g.
  pcnet32.ko.zst) and those snippets will not find these compressed
  modules.

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