Drop support for py38, py39

Kolla-ansible itself requires ansible-core>=2.16,<2.18,
but ansible-core in this version no longer supports
python38 and python39 as per [1].

So let's just drop this old python support.

[1] https://github.com/ansible/ansible/blob/v2.16.11/setup.cfg

Change-Id: Ic8aaa57f75479a17c215c27ac5e6df0f18c74edc

releasenotes/notes/drop-py38-and-py39-3fd79da5557fca7b.yaml

@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    Python 3.8, 3.9 support has been dropped. The minimum version of Python now
+    supported by Kolla Ansible is Python 3.10.

setup.cfg

@@ -6,7 +6,7 @@ description_file =
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/kolla-ansible/latest/
-python_requires = >=3.8
+python_requires = >=3.10
 license = Apache License, Version 2.0
 classifier =
     Environment :: OpenStack
@@ -18,8 +18,6 @@ classifier =
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
 

zuul.d/project.yaml

@@ -4,13 +4,16 @@
     templates:
       - check-requirements
       - openstack-cover-jobs
-      - openstack-python3-jobs
       - ansible-role-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
       - periodic-stable-jobs
     check:
       jobs:
+        - openstack-tox-pep8
+        - openstack-tox-py310
+        - openstack-tox-py311
+        - openstack-tox-py312
         - kolla-ansible-centos9s
         - kolla-ansible-debian
         - kolla-ansible-debian-podman
@@ -78,6 +81,9 @@
         - kolla-ansible-debian-upgrade-aarch64
     gate:
       jobs:
+        - openstack-tox-py310
+        - openstack-tox-py311
+        - openstack-tox-py312
         - kolla-ansible-debian
         - kolla-ansible-debian-upgrade
         - kolla-ansible-debian-podman
@@ -91,6 +97,9 @@
         - kolla-ansible-ubuntu-prometheus-opensearch-upgrade
         - kolla-ansible-ubuntu-upgrade
         - kolla-ansible-ubuntu-podman
+    post:
+      jobs:
+        - publish-openstack-python-branch-tarball
     experimental:
       jobs:
         - kolla-ansible-rocky9-swift-upgrade