Additional test updates

* switch to release-specific zosci functional tests
* switch to yoga zosci unit test job
* add py39

Change-Id: I9e922e77175fb117a2d98a3c42f2cddfae0dc326

osci.yaml

@@ -1,25 +1,12 @@
 - project:
     templates:
-      - charm-unit-jobs
-      # using overridden, shorter functional list because the charm does
-      # already in the tests.yaml
-      # - charm-functional-jobs
-    check:
-      jobs:
-      - bionic-stein
-      - bionic-train
-      - bionic-ussuri
-      - focal-ussuri
-      - focal-victoria
-      - focal-wallaby
-      - focal-xena
-      - focal-yoga:
-          voting: false
-      - hirsute-wallaby
-      - impish-xena:
-          voting: false
-      - jammy-yoga:
-          voting: false
+      - charm-yoga-unit-jobs
+      - charm-yoga-functional-jobs
+      - charm-xena-functional-jobs
+      - charm-wallaby-functional-jobs
+      - charm-victoria-functional-jobs
+      - charm-ussuri-functional-jobs
+      - charm-stein-functional-jobs
     vars:
       needs_charm_build: true
       charm_build_name: barbican

tox.ini

@@ -75,6 +75,11 @@ basepython = python3.8
 deps = -r{toxinidir}/test-requirements.txt
 commands = stestr run --slowest {posargs}
 
+[testenv:py39]
+basepython = python3.9
+deps = -r{toxinidir}/test-requirements.txt
+commands = stestr run --slowest {posargs}
+
 [testenv:pep8]
 basepython = python3
 deps = flake8==3.9.2