Do not zip the artifact if it is a zip file
Description
Do not zip the product if it is a zip file.
Some time, the build script generate a single zip file (due to some issue of gitlab: https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/issues/1057#note_19230975).
However, gitlab re-zip artifact even it is a single zip file.
Proposal
Do not zip artifacts if it is a single file.
Links to related issues and merge requests / references
https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/issues/1057#note_19230975