Add s390x support

[vishnubijukumaribm]

This PR introduces s390x support for the test-tools image, a crucial step toward building and running KEDA on the s390x architecture.

Key Changes:

1. Updated tools/Dockerfile to support s390x builds.
2. Modified the Makefile to enable s390x-architecture compatibility.
3. Also Upgraded Golang to 1.22.12-alpine3.21 in the k6-runner/Dockerfile.

With these enhancements, the test-tools image can now be successfully built and utilized for KEDA development on s390x.

[vishnubijukumaribm]

@JorTurFer could you please review and approve the changes for this PR. We are adding support for s390x architecture.

[JorTurFer]

Hello
Could you give us more context about why this image is needed? I assume that it's to support s390x arch but that support is something that we can't provide as we don't have any way to cover it with at least smoke tests. Is this requirement to support officially s390x by KEDA or it's something that you will build by yourself?
We try to ensure the quality of all the projects that we offer and we can't support an architecture that we can't tests

[vishnubijukumaribm]

This is to support officially s390x by KEDA.

[zroubalik]

Hi, as mentioned by @JorTurFer in order to officially support another architecture, we would need to run the testsuite on this arch - we don't have servers with s390x. So this is not something we can do.

[zroubalik]

this would need to be s390x runner

[JorTurFer]

And this can be covered using docker buildx and emulating the arch with qemu, but we need s390x machines to run KEDA's smoke suite, and that's not something that we can emulate

[dilipgb]

@JorTurFer this is the concern we can address by providing s390x machine in IBM Cloud. We have done the similar approach for testing buildpacks project and I have implemented github actions for the same. You can refer buildpacks lifecycle job here: https://github.com/buildpacks/lifecycle/actions/workflows/test-s390x.yml. We can follow the similar approach or other approach feasible here from KEDA community perspective.

From support and fixing on s390x perspective, our team will be working with KEDA community with fixes on s390x whenever necessary. We can discuss further if there are questions and concerns.

[zroubalik]

That is great!

@dilipgb could you please open an issue on https://github.com/kedacore/keda first to discuss this problem in general?

We need certain assurances around maintaince and access to the test machines, before we can proceed.

[dilipgb]

I had this topic created in discussion long back and I didn't get any response. kedacore/keda#5584. @zroubalik you suggest to open an issue instead of a topic here? Please let me know I will raise issue accordingly.

[zroubalik]

I created an issue from the discussion. Let's continue there.