update tox jobs to use py38, py39

Change-Id: Id593eec305781dbb0b0f5e82889b146c0da188ae

.zuul.yaml

@@ -2,7 +2,6 @@
 - project:
     templates:
       - docs-on-readthedocs
-      - openstack-python37-jobs
       - openstack-tox-molecule
     vars:
       rtd_webhook_id: '51626'
@@ -10,10 +9,14 @@
       jobs:
         - openstack-tox-linters
         - openstack-tox-molecule
+        - openstack-tox-py38
+        - openstack-tox-py39
     gate:
       jobs:
         - openstack-tox-linters
         - openstack-tox-molecule
+        - openstack-tox-py38
+        - openstack-tox-py39
     post:
       jobs:
         - browbeat-upload-git-mirror

test-requirements.txt

@@ -11,7 +11,7 @@ coverage>=3.6
 pre-commit  # MIT
 pyrsistent==0.16.0;python_version<'3'
 pyrsistent>=0.17.0;python_version>='3'
-pytest==3.2.1
+pytest>=6.2.0,<7.0;python_version>='3'
 python-subunit>=0.0.18
 
 readme_renderer[md]

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.1.1
-envlist = py27,py37,linters,dist,insights,molecule
+envlist = py38,py39,linters,dist,insights,molecule
 skipsdist = True
 
 [testenv]
@@ -53,12 +53,12 @@ commands = flake8 {posargs}
 basepython = python3
 commands = {posargs}
 
-[testenv:py27]
-basepython = python2.7
+[testenv:py38]
+basepython = python3.8
 commands = pytest {posargs}
 
-[testenv:py37]
-basepython = python3.7
+[testenv:py39]
+basepython = python3.9
 commands = pytest {posargs}
 
 [testenv:cover]