Freeze break request: kernel builders

[Kevin Fenzi]

So, last week I managed to break bkernel01 kernel builder (and we have
been using just 02 since then). There were 2 issues:

1. I switched rawhide to use systemd-nspawn for isolation instead of
chroot and this broke kernel builds due to (
https://github.com/rpm-software-management/mock/issues/140 )

2. pesign in f36 had some issues with unlocking the smart cards. 
( https://bugzilla.redhat.com/show_bug.cgi?id=2122777 )

The pesign maintainers fixed issue 2 this morning and I tested the
workaround I have for issue 1 in mock on bkernel01. 

So, what I would like to do now is: 

* upgrade bkernel02 to the same pesign version as on 01 along with
moving it to f36 (like 01 is).
* Push a commit in ansible to adjust mock config for the workaround for
issue 1 above.

+1s or further questions?

kevin