dib-functests: run on bookworm

Run dib-functests on bookworm, which should mean that we don't need to
pull in the unstable debootstrap
(c.f. 7b6247554e).

This should be good for a while :)
(c.f. 1a5c563920)

Change-Id: Ib9240c086eff84e02740d98f02e1846a8a39298d

.zuul.d/jobs.yaml

@@ -18,7 +18,7 @@
     description: |
       This is the base set of stable tests
     parent: dib-functests-base
-    nodeset: debian-bullseye
+    nodeset: debian-bookworm
     vars:
       dib_functests:
         - containerfile/jammy-build-succeeds

playbooks/dib-functests/run.yaml

@@ -5,6 +5,5 @@
     - bindep
     - dib-setup-gate-mirrors
     - ensure-podman
-    - dib-ensure-debootstrap
     - dib-functests
 

roles/dib-ensure-debootstrap/README.rst

@@ -1,2 +0,0 @@
-Update debootstap from debian unstable. This ensures debootstrap is new
-enough to recognize Jammy.

roles/dib-ensure-debootstrap/tasks/main.yaml

@@ -1,12 +0,0 @@
-- name: Install debootstrap/unstable
-  # This is shell because doing it with native ansible modules went nowhere
-  become: yes
-  shell: |
-    set -ex
-    echo "APT::Default-Release: 'stable';" > /etc/apt/apt.conf.d/default-release
-    # echo "deb http://deb.debian.org/debian unstable main" > /etc/apt/sources.list.d/unstable-debian.list
-    apt-get update
-    apt-get install -y debootstrap
-    # Remove the use of unstable as it seems to interfere with other tasks
-    # rm /etc/apt/sources.list.d/unstable-debian.list
-    apt-get --assume-yes update