`make test-sh` does not work with artifacts tagged with `-latest` suffix

[wkz]

Current Behavior

A common pattern to check some Infix behavior, using the test system, is:

1. git pull
2. ./utils/gh-dl-artifact.sh
3. cd x-gh-dl-*
4. make test-sh

This no longer works if the chosen artifact happens to be a -latest image.

Expected Behavior

make test{,-sh} should be able to handle this case, somehow.

Steps To Reproduce

No response

Additional information

No response

[wkz]

CCB:

This seems to be related specifically to weekly builds.

These are also very large (~2GB for x86) because they include legal info.

Legal info, in turn, is huge because we include all sources for the entire build in it. This might be needed in some cases (source code scanners) but should not be a part of legal-info, but rather a future sdk artifact, or similar.

Additionally: at the moment the weekly tarball contains two nested tarballs: the standard release artifact tarball and the legal-info ditto. Ideally, the legal-info should be included in the standard tarball instead.