Update commonconfig-6.1 to build kernel with TLS module

[krishjainx]

This pull request aims to modify commonconfig-6.1 in order to incorporate a TLS module for kernel building. By integrating the TLS module, applications and containers will have the ability to offload TLS processing to the kernel.

Fixes flatcar/Flatcar#995

CI: http://jenkins.infra.kinvolk.io:8080/job/container/job/packages_all_arches/1992/cldsv/

[jepio]

Can you please also fix the format of the commit message: sys-kernel/coreos-modules: Enable TLS support as a module

[github-actions]

Build action triggered: https://github.com/flatcar/scripts/actions/runs/5280553616

[krishjainx]

Done @jepio

[dongsupark]

Added Fixes https://github.com/flatcar/Flatcar/issues/995 in the description, so that merging this PR can close the issue as well.

[dongsupark]

Running Jenkins CI http://jenkins.infra.kinvolk.io:8080/job/container/job/packages_all_arches/1992/cldsv/ for cross-checking.

[dongsupark]

Jenkins CI passed. So let's ignore the flaky failures from Github Actions.

One last missing piece is changelog.
Every PR should have a separate commit that contains changelog to be automatically collected by the next release process, for creating release notes.
In your case, create a new file like changelog/changes/2023-06-15-kernel-tls.md, and in that file simply write a line like - Added TLS Kernel module ([scripts#865](https://github.com/flatcar/scripts/pull/865)).

See also https://github.com/flatcar/scripts/blob/main/changelog/README.md.

[krishjainx]

Done @dongsupark

[dongsupark]

Looks good.
Thanks for the contribution.