Switch testing to Victoria testing runtime

Updating the testing template from ussuri to victoria
testing runtime
- https://governance.openstack.org/tc/reference/runtimes/victoria.html

Change-Id: If964909a73a52836e3adbb7b695f1c7322b81830

.zuul.yaml

@@ -607,7 +607,7 @@
       - check-requirements
       - integrated-gate-py3
       - openstack-cover-jobs
-      - openstack-python3-ussuri-jobs
+      - openstack-python3-victoria-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
     check:

setup.cfg

@@ -17,6 +17,7 @@ classifier =
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: Implementation :: CPython
 

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = pep8,py36,py37,bashate,pip-check-reqs
+envlist = pep8,py36,py38,bashate,pip-check-reqs
 minversion = 3.1.1
 skipsdist = True
 ignore_basepython_conflict = True