Remove Python 3.8 support

Python 3.8 is no longer part of the tested runtimes for 2024.2[1]
because its EOL is coming soon.

Also replace the deprecated md5 function from oslo.utils .

[1] https://governance.openstack.org/tc/reference/runtimes/2024.2.html

Change-Id: Ic052d5c599b7db055d9d875f18627c6056072eef

oslo_versionedobjects/fixture.py

@@ -24,13 +24,13 @@ from collections import namedtuple
 from collections import OrderedDict
 import copy
 import datetime
+import hashlib
 import inspect
 import logging
 from reprlib import recursive_repr
 from unittest import mock
 
 import fixtures
-from oslo_utils.secretutils import md5
 from oslo_utils import versionutils as vutils
 
 from oslo_versionedobjects import base
@@ -288,7 +288,7 @@ class ObjectVersionChecker(object):
         if extra_data_func:
             relevant_data += extra_data_func(obj_class)
 
-        fingerprint = '%s-%s' % (obj_class.VERSION, md5(
+        fingerprint = '%s-%s' % (obj_class.VERSION, hashlib.md5(
             bytes(repr(relevant_data).encode()),
             usedforsecurity=False).hexdigest())
         return fingerprint

releasenotes/notes/remove-py38-f4e8c7ce18a5914b.yaml

@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    Support for Python 3.8 has been removed. Now the minimum python version
+    supported is 3.9 .

setup.cfg

@@ -6,7 +6,7 @@ description_file =
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/oslo.versionedobjects/latest/
-python_requires = >=3.8
+python_requires = >=3.9
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -15,7 +15,6 @@ classifier =
     Operating System :: POSIX :: Linux
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11