Created attachment 13906 [details]
Resolves by adding NSS_WRAPPER variables to the net calls

The ad_member environment fails to start, logging:

>> winbind seems not to run. createbuiltingroup only works when winbind runs.

Andreas explains the issue on samba-technical:

> libwbclient needs to connect to the winbind socket. To find the winbind socket 
> inside of selftest it uses:
>
>   if (nss_wrapper_enabled()) {
>           env_dir = getenv("SELFTEST_WINBINDD_SOCKET_DIR");
>   }
>
> So we need the NSS_WRAPPER variables to "enable" nss_wrapper. This way wbinfo 
> connects to the right winbindd ...