Code review comment for ~ubuntu-release/autopkgtest/+git/development:cross-arch-architecture-filtering

I think the patch pasted above should fix the root-cause in autopkgtest, but unfortunately, the libgpg-error/i386 test still fails. Now that the "win64" test is skipped and "win32" executed, "win32" fails with a "badpkg" error, which probably needs solving in the archive.

$ PYTHONPATH=lib/ runner/autopkgtest libgpg-error --apt-pocket=proposed=src:libgpg-error -a i386 -U -- qemu /data/autopkgtest-kinetic-amd64.img
[...]
win64 SKIP Test lists explicitly supported architectures, but the current architecture i386 isn't listed.
[...]
The following packages have unmet dependencies:
 builddeps:/tmp/autopkgtest.8Maso6/1-autopkgtest-satdep.dsc:i386 : Depends: gcc-mingw-w64-i686:i386 but it is not installable
                                                                   Depends: wine32:i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
win32 FAIL badpkg
blame: libgpg-error
badpkg: Test dependencies are unsatisfiable. A common reason is that your testbed is out of date with respect to the archive, and you need to use a current testbed or run apt-get update or use -U.

Full log: https://paste.ubuntu.com/p/JYHrJpMGbn/