[LTP] [PATCH v3] lib: Do not fail a test if oom score cannot be adjusted.

[Petr Vorel]

Hi all,

> Notes:
>     v2 --> v3
>     	* drop the useless CAP_SYS_ADMIN
>     	* add some new commments
Yes, CAP_SYS_ADMIN was redundant, thus I merged it.
Thanks a lot all.

>     CI job: https://github.com/wangli5665/ltp/actions/runs/1613852940

Yes, ubuntu cannot reach repos:

    Ign:1 http://security.ubuntu.com/ubuntu groovy-security InRelease
    Ign:2 http://archive.ubuntu.com/ubuntu groovy InRelease
    Err:3 http://security.ubuntu.com/ubuntu groovy-security Release
      404  Not Found [IP: 91.189.91.39 80]
    Ign:4 http://archive.ubuntu.com/ubuntu groovy-updates InRelease
    Ign:5 http://archive.ubuntu.com/ubuntu groovy-backports InRelease
    Err:6 http://archive.ubuntu.com/ubuntu groovy Release
      404  Not Found [IP: 91.189.88.142 80]
    Err:7 http://archive.ubuntu.com/ubuntu groovy-updates Release
      404  Not Found [IP: 91.189.88.142 80]
    Err:8 http://archive.ubuntu.com/ubuntu groovy-backports Release
      404  Not Found [IP: 91.189.88.142 80]
    Reading package lists...
    E: The repository 'http://security.ubuntu.com/ubuntu groovy-security Release' does not have a Release file.
    E: The repository 'http://archive.ubuntu.com/ubuntu groovy Release' does not have a Release file.
    E: The repository 'http://archive.ubuntu.com/ubuntu groovy-updates Release' does not have a Release file.
    E: The repository 'http://archive.ubuntu.com/ubuntu groovy-backports Release' does not have a Release file.

I'm testing upgrade to impish:

https://github.com/pevik/ltp/actions/runs/1614667613

Kind regards,
Petr