Enable py39 tox gate/test for app plugins

Add support for tox testing under Debian Bullseye by enabling
a python 3.9 gate and tox target for exercising plugin unit tests.
Also fix the pylint gate failure.

Story: 2009101
Task: 43129

Signed-off-by: Charles Short <charles.short@windriver.com>
Change-Id: Iac6eb206724bccb0e6897e1877e77d4e712f71b6

.zuul.yaml

@@ -5,6 +5,7 @@
         - openstack-tox-linters
         - k8sapp-platform-tox-py27
         - k8sapp-platform-tox-py36
+        - k8sapp-platform-tox-py39
         - k8sapp-platform-tox-flake8
         - k8sapp-platform-tox-pylint
         - k8sapp-platform-tox-bandit
@@ -13,6 +14,7 @@
         - openstack-tox-linters
         - k8sapp-platform-tox-py27
         - k8sapp-platform-tox-py36
+        - k8sapp-platform-tox-py39
         - k8sapp-platform-tox-flake8
         - k8sapp-platform-tox-pylint
         - k8sapp-platform-tox-bandit
@@ -54,6 +56,24 @@
       tox_envlist: py36
       tox_extra_args: -c python-k8sapp-platform/k8sapp_platform/tox.ini
 
+- job:
+    name: k8sapp-platform-tox-py39
+    parent: tox-py39
+    description: |
+      Run py39 test for k8sapp_platform
+    nodeset: debian-bullseye
+    required-projects:
+      - starlingx/config
+      - starlingx/fault
+      - starlingx/update
+      - starlingx/utilities
+    files:
+      - python-k8sapp-platform/*
+    vars:
+      tox_envlist: py39
+      python_version: 3.9
+      tox_extra_args: -c python-k8sapp-platform/k8sapp_platform/tox.ini
+
 - job:
     name: k8sapp-platform-tox-flake8
     parent: tox

bindep.txt

@@ -0,0 +1,10 @@
+# This is a cross-platform list tracking distribution packages needed for install and tests;
+# see https://docs.openstack.org/infra/bindep/ for additional information.
+
+libffi-dev [platform:dpkg]
+libldap2-dev [platform:dpkg]
+libxml2-dev [platform:dpkg]
+libxslt1-dev [platform:dpkg]
+libsasl2-dev [platform:dpkg]
+libffi-devel [platform:rpm]
+python3-all-dev [platform:dpkg]

python-k8sapp-platform/k8sapp_platform/tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = flake8,py27,py36,pylint,bandit
+envlist = flake8,py27,py36,py39,pylint,bandit
 minversion = 1.6
 # skipsdist = True
 #,pip-missing-reqs
@@ -13,9 +13,9 @@ distshare={toxworkdir}/.tox/distshare
 # enabling usedevelop results in  py27 develop-inst:
 # Exception: Versioning for this project requires either an sdist tarball,
 # or access to an upstream git repository.
-# Note. site-packages is true and rpm-python must be yum installed on your dev machine.
+# Note. site-packages is false and rpm-python must be yum installed on your dev machine.
 usedevelop = True
-sitepackages = True
+sitepackages = False
 
 # tox is silly... these need to be separated by a newline....
 whitelist_externals = bash
@@ -118,6 +118,19 @@ commands =
   stestr run {posargs}
   stestr slowest
 
+[testenv:py39]
+basepython = python3.9
+install_command = pip install --use-deprecated legacy-resolver \
+    -v -v -v \
+    -c{toxinidir}/upper-constraints.txt \
+    -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/starlingx/root/raw/branch/master/build-tools/requirements/debian/upper-constraints.txt} \
+    {opts} {packages}
+commands =
+  {[testenv]commands}
+  stestr run {posargs}
+  stestr slowest
+
+
 [testenv:pep8]
 # testenv:flake8 clone
 basepython = {[testenv:flake8]basepython}