Test python 3.11

As per the current release tested runtime, we
need to test python 3.8 to python 3.11 so using the
generic python testing template which run the python
versions jobs as per the current release runtime.

Also, updating the same in python classifier in setup.cfg

Change-Id: I3d8ed2c9cf31d3e02ae6489097229e69b3169c7a

.zuul.yaml

@@ -1,8 +1,8 @@
 - project:
     templates:
       - check-requirements
-      - openstack-python3-antelope-jobs
+      - openstack-python3-jobs
       - openstackclient-plugin-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
-      - openstack-cover-jobs
+      - openstack-cover-jobs

setup.cfg

@@ -6,7 +6,7 @@ description_file =
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/python-vitrageclient/latest/
-python_requires = >=3.6
+python_requires = >=3.8
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -17,9 +17,10 @@ classifier =
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
 
 [files]
 packages =