Zuul: Set all nodesets to debian-bullseye

The default nodeset used by the openstack-tox-linters job has
recently changed to Ubuntu Noble, which runs python 3.12

Meanwhile, the current Ansible version set on the repo, 2.10.7,
is not supported on it [1].

To fix this, set all Zuul jobs to run on debian-bullseye nodes,
matching the runtime OS, which uses a compatible python version.

Ref:
[1] https://docs.ansible.com/ansible/latest/reference_appendices/release_and_maintenance.html#ansible-core-support-matrix

Test Plan:
pass - Run tox tests in a debian:bullseye container
pass - Zuul vote

Closes-Bug: 2090875

Change-Id: Id87c8fb3e2d7eff3e5220df5ddab720561e3db1a
Signed-off-by: Leonardo Fagundes Luz Serrano <Leonardo.FagundesLuzSerrano@windriver.com>

.zuul.yaml

@@ -1,18 +1,44 @@
 - project:
     check:
       jobs:
-        - openstack-tox-linters
+        - ansible-playbooks-tox-linters
-        - openstack-tox-pep8
+        - ansible-playbooks-tox-pep8
         - ansible-playbooks-tox-bandit
     gate:
       jobs:
-        - openstack-tox-linters
+        - ansible-playbooks-tox-linters
-        - openstack-tox-pep8
+        - ansible-playbooks-tox-pep8
         - ansible-playbooks-tox-bandit
     post:
       jobs:
         - stx-ansible-playbooks-upload-git-mirror
 
+- job:
+    name: ansible-playbooks-tox-linters
+    parent: openstack-tox-linters
+    description: |
+      Run linters
+    nodeset: debian-bullseye
+
+- job:
+    name: ansible-playbooks-tox-pep8
+    parent: openstack-tox-pep8
+    description: |
+      Check conformance with pep8
+    nodeset: debian-bullseye
+
+- job:
+    name: ansible-playbooks-tox-bandit
+    parent: tox
+    description: |
+      Run bandit test for ansible-playbooks
+    nodeset: debian-bullseye
+    files:
+      - ./*
+    vars:
+      tox_envlist: bandit
+      tox_extra_args: -c ./tox.ini
+
 - job:
     name: stx-ansible-playbooks-upload-git-mirror
     parent: upload-git-mirror
@@ -26,18 +52,6 @@
         secret: stx-ansible-playbooks-github-secret2
         pass-to-parent: true
 
-- job:
-    name: ansible-playbooks-tox-bandit
-    parent: tox
-    description: |
-      Run bandit test for ansible-playbooks
-    nodeset: ubuntu-bionic
-    files:
-      - ./*
-    vars:
-      tox_envlist: bandit
-      tox_extra_args: -c ./tox.ini
-
 - secret:
     name: stx-ansible-playbooks-github-secret2
     data: