Add Python 3.10 functional jobs

These are currently non-voting since we don't care about this stuff for
Zed. It does get us ready for a 3.10-having future, however.

Change-Id: I7740dafd6523eca27fa4e725d7eaf8558e434779
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>

tox.ini

@@ -43,6 +43,42 @@ commands =
   env TEST_OSPROFILER=1 stestr run --combine --no-discover 'nova.tests.unit.test_profiler'
   stestr slowest
 
+[testenv:functional{,-py38,-py39,-py310}]
+description =
+  Run functional tests.
+# As nova functional tests import the PlacementFixture from the placement
+# repository these tests are, by default, set up to run with openstack-placement
+# from pypi. In the gate, Zuul will use the installed version of placement (stable
+# branch version on stable gate run) OR the version of placement the Depends-On in
+# the commit message suggests. If you want to run the tests with latest master from
+# the placement repo, modify the dep line to point at master, example:
+# deps =
+#   {[testenv]deps}
+#   git+https://opendev.org/openstack/placement#egg=openstack-placement
+# If you want to run the test locally with an un-merged placement change,
+# modify the dep line to point to your dependency or pip install placement
+# into the appropriate tox virtualenv.
+# NOTE: We express the requirement here instead of test-requirements
+# because we do not want placement present during unit tests.
+deps =
+  {[testenv]deps}
+  openstack-placement>=1.0.0
+extras =
+commands =
+  stestr --test-path=./nova/tests/functional run {posargs}
+  stestr slowest
+
+[testenv:functional-without-sample-db-tests]
+description =
+  Run functional tests by excluding the API|Notification
+  sample tests and DB tests. This env is used in
+  placement-nova-tox-functional-py38 job which is defined and
+  run in placement.
+deps = {[testenv:functional]deps}
+extras =
+commands =
+  stestr --test-path=./nova/tests/functional run --exclude-regex '((?:api|notification)_sample_tests|functional\.db\.)' {posargs}
+
 [testenv:mypy]
 description =
   Run type checks.
@@ -97,74 +133,6 @@ skipsdist = true
 commands =
   bash tools/check-cherry-picks.sh
 
-[testenv:functional]
-description =
-  Run functional tests using python3.
-# As nova functional tests import the PlacementFixture from the placement
-# repository these tests are, by default, set up to run with openstack-placement
-# from pypi. In the gate, Zuul will use the installed version of placement (stable
-# branch version on stable gate run) OR the version of placement the Depends-On in
-# the commit message suggests. If you want to run the tests with latest master from
-# the placement repo, modify the dep line to point at master, example:
-# deps =
-#   {[testenv]deps}
-#   git+https://opendev.org/openstack/placement#egg=openstack-placement
-# If you want to run the test locally with an un-merged placement change,
-# modify the dep line to point to your dependency or pip install placement
-# into the appropriate tox virtualenv.
-# NOTE: We express the requirement here instead of test-requirements
-# because we do not want placement present during unit tests.
-deps =
-  {[testenv]deps}
-  openstack-placement>=1.0.0
-extras =
-commands =
-  stestr --test-path=./nova/tests/functional run {posargs}
-  stestr slowest
-
-[testenv:functional-py36]
-description =
-  Run functional tests using python3.6.
-deps = {[testenv:functional]deps}
-extras =
-commands =
-  {[testenv:functional]commands}
-
-[testenv:functional-py37]
-description =
-  Run functional tests using python3.7.
-deps = {[testenv:functional]deps}
-extras =
-commands =
-  {[testenv:functional]commands}
-
-[testenv:functional-py38]
-description =
-  Run functional tests using python3.8.
-deps = {[testenv:functional]deps}
-extras =
-commands =
-  {[testenv:functional]commands}
-
-[testenv:functional-without-sample-db-tests]
-description =
-  Run functional tests by excluding the API|Notification
-  sample tests and DB tests. This env is used in
-  placement-nova-tox-functional-py38 job which is defined and
-  run in placement.
-deps = {[testenv:functional]deps}
-extras =
-commands =
-  stestr --test-path=./nova/tests/functional run --exclude-regex '((?:api|notification)_sample_tests|functional\.db\.)' {posargs}
-
-[testenv:functional-py39]
-description =
-  Run functional tests using python3.9.
-deps = {[testenv:functional]deps}
-extras =
-commands =
-  {[testenv:functional]commands}
-
 [testenv:api-samples]
 envdir = {toxworkdir}/functional
 setenv =
@@ -323,7 +291,7 @@ exclude =  .venv,.git,.tox,dist,*lib/python*,*egg,build,releasenotes
 # to 25 and run 'tox -epep8'.
 # 39 is currently the most complex thing we have
 # TODO(jogo): get this number down to 25 or so
-max-complexity=40
+max-complexity = 40
 
 [hacking]
 import_exceptions = typing,nova.i18n