NetMa components on arm64/v8

To be able to use the NetMa component on an arm64/v8 machine, we would need images that support both the amd64 and arm64/v8 versions of all NetMa components:

• mysql-pod tries to download a version that doesn't have an arm64/v8 image. This can be fixed by just replacing the image with mysql:8.0 or any other version that has an arm64/v8 image.
• l2sm-controller, l2sm-controller-manager and l2sm-operator all throw exec format error because those images don't have an arm64/v8 image available. Therefore, it would be necessary to compile those images also for arm64/v8.

See https://gitlab.eclipse.org/eclipse-research-labs/codeco-project/use-cases/p1-smartcity/-/issues/1 as well.