issues with stretch, part 1 of many

[Ionel Mugurel Ciobîcă <IM.Ciobica@gmail.com>]

Dear all,

I have many issues with stretch which I cannot figure it out. I will
post one at the time, to keep it clear and simple.

I use Debian since 1997. I never had an issue with any release, except
stretch. I installed fresh using net install disk. The install went OK
(except I was forced to chose a wrong timezone (I was not asked about
the continent), but that I fix after installation).

The first question I want to ask relates to ssh, ssh-ask and
ssh-agent. When I ssh to another computer I am asked "Allow use of key
id_rsa? Key fingerprint ..." If I uninstall all ssh-ask programs I
simply can't use the ssh-agent anymore and I am prompted for password.
I try ssh-ask, ssh-ask-fullscreen, ssh-ask-gnome and the similar from
kde. I check the /etc/ssh/ssh_config and /etc/ssh/sshd_config for
anything that may relate to this. The only think coming close are:
UsePAM yes
ChallengeResponseAuthentication no

Is there something I overlook?

To be clear, I do not want to be asked if I allow the use of a key, I
just want this to be assumed yes, as it was the case in the past. 

So, I run Linux 4.9.0-8-amd64, Debian 9u6. ssh is openssh_7.4p1,
openssl 1.0.2l ssh-agent is started in $HOME/.xsessionrc as:
eval `ssh-agent -s`

Thank you for any hint.

Kind regards,
 Ionel