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.

Story: 2009101
Task: 43188

Signed-off-by: Charles Short <charles.short@windriver.com>
Change-Id: Ie7f0f4efd809fafb95a14274c400e7cb2f8458b9

.zuul.yaml

@@ -3,13 +3,32 @@
     check:
       jobs:
         - openstack-tox-linters
+        - k8app-snmp-armada-tox-py39
     gate:
       jobs:
         - openstack-tox-linters
+        - k8app-snmp-armada-tox-py39
     post:
       jobs:
         - stx-snmp-armada-app-upload-git-mirror
 
+- job:
+    name: k8app-snmp-armada-tox-py39
+    parent: tox-py39
+    description: |
+        Run py39 test for k8app-snmp-armada-app
+    nodeset: debian-bullseye
+    required-projects:
+        - starlingx/config
+        - starlingx/fault
+        - starlingx/update
+        - starlingx/utilities
+    files:
+        - python-k8sapp-snmp/k8sapp_snmp/*
+    vars:
+        tox_envlist: py39
+        python_version: 3.9
+        tox_extra_args: python-k8sapp-snmp/k8sapp_snmp/tox.ini
 - job:
     name: stx-snmp-armada-app-upload-git-mirror
     parent: upload-git-mirror
@@ -100,4 +119,4 @@
           Zbi+hbm/Cfzd8/hCnIQbG7LSi0kAiNSgM9pcU2J3qcivIL7ArpjOrYR+qTa4BraGcqumM
           oCrQPmkGGbtEjqD1r7GUHUaUUU2EnCv+qfXF2+GqV3VruRP0X/WWbLmfKYjLgDn3tY5nM
           PFo3bmC7D9aU2vHRefTIu0XPpg7VqGTaPIPngkpp71rwlc8s+Kskt/it3o6ZtQNsSna5+
-          YrbCChy6nCnzWhPeNtAGlRzfSkMYJig98fgEC6wgOexmN6cUYGR7Q0pt/o0Ct0=
+          YrbCChy6nCnzWhPeNtAGlRzfSkMYJig98fgEC6wgOexmN6cUYGR7Q0pt/o0Ct0=

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-snmp/k8sapp_snmp/.stestr.conf

@@ -1,4 +1,4 @@
 [DEFAULT]
-test_path=./k8sapp_cert_manager/tests
+test_path=./k8sapp_snmp/tests
-top_dir=./k8sapp_cert_manager
+top_dir=./k8sapp_snmp
 #parallel_class=True

python-k8sapp-snmp/k8sapp_snmp/k8sapp_snmp/tests/test_plugins.py

@@ -4,6 +4,10 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
+import mock
+
+from k8sapp_snmp.helm.snmp import SnmpHelm
+
 from sysinv.common import constants
 from sysinv.tests.db import base as dbbase
 from sysinv.tests.helm.test_helm import HelmOperatorTestSuiteMixin
@@ -15,6 +19,10 @@ class K8SAppSnmpAppMixin(object):
 
     def setUp(self):
         super(K8SAppSnmpAppMixin, self).setUp()
+        get_db_connection = mock.patch.object(SnmpHelm,
+                '_get_database_connection')
+        self.mock_save_overrides = get_db_connection.start()
+        self.addCleanup(get_db_connection.stop)
 
 
 # Test Configuration:

python-k8sapp-snmp/k8sapp_snmp/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
@@ -14,15 +14,15 @@ 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.
-sitepackages = True
+sitepackages = False
 
 # tox is silly... these need to be separated by a newline....
 whitelist_externals = bash
                       find
 
 install_command = pip install \
-    -v -v -v \
+    -v -v -v  --use-deprecated legacy-resolver \
     -c{toxinidir}/upper-constraints.txt \
     -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt} \
     {opts} {packages}
@@ -79,6 +79,18 @@ commands =
   stestr run {posargs}
   stestr slowest
 
+[testenv:py39]
+basepython = python3.9
+install_command = pip install \
+    -v -v -v  --use-deprecated legacy-resolver \
+    -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}