fix(dra): load xz-compressed usbip kernel modules

[danilrwx]

Description

On nodes where the pre-installed usbip kernel modules are shipped compressed, the DRA USB driver failed to initialize with module ...usbip-core.ko.zst not found, so USB passthrough was unavailable on those nodes. Kernel modules can be compressed with any of the three formats the kernel supports (zstd, xz, gzip), but only .ko and .ko.zst were recognized. The driver now finds and decompresses .ko.xz and .ko.gz too, and the node-configuration check that installs the modules recognizes the same set of formats.

Why do we need it, and what problem does it solve?

Some distributions (e.g. the observed node shipped .ko.xz) compress kernel modules with xz or gzip instead of zstd. USB passthrough silently stayed broken on such nodes because the driver only knew about zstd. This makes module loading work regardless of the host's chosen compression format.

What is the expected result?

On a node whose usbip modules are .ko.xz (or .ko.gz), the DRA USB driver init loads the modules successfully and USB passthrough works, instead of failing with module not found.

Checklist

• The code is covered by unit tests.
• e2e tests passed.
• Documentation updated according to the changes.
• Changes were tested in the Kubernetes cluster manually.

Changelog entries

section:  core
type: fix
summary: "USB passthrough now works on nodes where usbip kernel modules are compressed with xz or gzip, not only zstd."
impact_level: low