Dear samba maintainers,

Please, find attached an autopkgtest that checks if %U variable
substitution in include config files works correctly.

I have include it and verified it works in the recent buster update
https://tracker.debian.org/news/1520926/accepted-samba-2495dfsg-5deb10u5-source-into-oldoldstable/
to confirm it didn't introduce regressions like the one described at:
https://bugs.launchpad.net/ubuntu/+source/samba/+bug/2003867

Cheers,