Bug#869873: Stretch regression: apt-key fails due to missing gnupg

[Harald Dunkel <harald.dunkel@aixigo.de>]

Package: apt
Version: 1.4.7

Apparently apt-key requires gnupg even for Stretch:

root@stretch3:~# apt-key list
E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation

The system was setup using debootstrap. For Jessie there
was no such problem.

I would strongly recommend to move gnupg and its alternatives
to Depends, as it was for Jessie. apt-key is essential for 
managing signed packages, which is one of the key features
of Debian (IMHO).


Regards
Harri