Add Python3 zed unit tests

This is an automatically generated patch to ensure unit testing
is in place for all the of the tested runtimes for zed.

See also the PTI in governance [1].

I needed to squash in another change that is dropping the py36 and py37
support. We cannot do that separately as those jobs are already failing.

[1]: https://governance.openstack.org/tc/reference/project-testing-interface.html

Change-Id: I378d5c3c1f3e96696670a4865caf5901269a5ee4

.zuul.yaml

@@ -1,35 +1,32 @@
 - project:
     templates:
-      - openstack-python3-yoga-jobs
+      - openstack-python3-zed-jobs
       - check-requirements
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
       - openstackclient-plugin-jobs
     check:
       jobs:
-        - openstack-tox-functional-py36:
-            required-projects:
-              - openstack/placement
-        - openstack-tox-functional-py37:
-            required-projects:
-              - openstack/placement
         - openstack-tox-functional-py38:
             required-projects:
               - openstack/placement
         - openstack-tox-functional-py39:
             required-projects:
               - openstack/placement
+        - openstack-tox-functional-py310:
+            required-projects:
+              - openstack/placement
+            voting: False
     gate:
       jobs:
-        - openstack-tox-functional-py36:
-            required-projects:
-              - openstack/placement
-        - openstack-tox-functional-py37:
-            required-projects:
-              - openstack/placement
         - openstack-tox-functional-py38:
             required-projects:
               - openstack/placement
         - openstack-tox-functional-py39:
             required-projects:
               - openstack/placement
+        - openstack-tox-functional-py310:
+            required-projects:
+              - openstack/placement
+            voting: False
+

setup.cfg

@@ -6,7 +6,7 @@ description_file =
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/osc-placement/latest/
-python_requires = >=3.6
+python_requires = >=3.8
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -17,8 +17,6 @@ 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
 

tox.ini

@@ -31,20 +31,6 @@ deps =
   git+https://opendev.org/openstack/placement.git#egg=openstack-placement
 commands = stestr --test-path=./osc_placement/tests/functional run {posargs}
 
-[testenv:functional-py36]
-description =
-  Run functional tests using python3.6.
-deps = {[testenv:functional]deps}
-commands =
-  {[testenv:functional]commands}
-
-[testenv:functional-py37]
-description =
-  Run functional tests using python3.7.
-deps = {[testenv:functional]deps}
-commands =
-  {[testenv:functional]commands}
-
 [testenv:functional-py38]
 description =
   Run functional tests using python3.8.
@@ -59,6 +45,14 @@ deps = {[testenv:functional]deps}
 commands =
   {[testenv:functional]commands}
 
+[testenv:functional-py310]
+description =
+  Run functional tests using python3.10.
+deps = {[testenv:functional]deps}
+commands =
+  {[testenv:functional]commands}
+
+
 [testenv:pep8]
 description =
   Run style checks.