While experimenting with Samba, I noticed that some tools, especially
samba-tools will not run, and crash:
--8<---------------cut here---------------start------------->8---
root@motor ~# samba-tool
Traceback (most recent call last):
  File "/run/current-system/profile/bin/samba-tool", line 33, in <module>
    from samba.netcmd.main import cmd_sambatool
  File "/gnu/store/78baaab8085rd5xnfrpdkxdf07zkmin9-samba-mod-4.13.14/lib/python3.9/site-packages/samba/__init__.py", line 29, in <module>
    import samba.param
ModuleNotFoundError: No module named 'talloc'
--8<---------------cut here---------------end--------------->8---

Doing more testing, other tools appear to not find the libraries they
need too.  The combination is as folows:
 - samba-tool, fails when tdb missing.
 - samba-gpupdate Idem.
 - samba_dnsupdate requires dnspython, but fails when talloc missing.
 - samba_downgrade_db" fails when tdb missing.
 - samba_kcc Idem.
 - samba_spnupdate" Idem.
 - samba_upgradedns" dns not found when talloc missing.

I prepared a small patch to wrap up the inputs appropriately.  I hope it
is acceptable that they are all combined in one wrap procedure.

dnspython was added as a new input too.


Kind regards
Simon