Quantum d93510e9f2 [host] linux: allow getting system version
Result is something like:

    Debian GNU/Linux 11 (bullseye), kernel: Linux 5.14.0-0.bpo.2-amd64 on x86_64
2022-01-27 05:47:53 +11:00
..
2022-01-05 19:42:46 +11:00