opendev: bumped gates to python 3.9/3.10

Python 3.6/3.7 are no longer supported for the latest releasese of
the OpenStack packages like oslo or coverage, thus switching to the Zed
OpenStack release gates, which have support for 3.8/3.9/3.10 Python
versions.

For gates to pass, the docs required a defined language to be set ("en"),
while the crypto unit tests required a method signature fix when running
on Python 3.9/3.10.

The version test__check_latest_version* unit tests started failing
in a transient pattern because of the
pbr.version.VersionInfo().release_string() throwing the following error:
"NotImplementedError: cannot instantiate 'WindowsPath' on your system".
This required to have the cloudbaseinit.version.get_version mocked for a
reliable unit test run on Linux.

Change-Id: I4748d1258c072c377825474e1116347b0a085c56

.zuul.yaml

@@ -2,7 +2,7 @@
     templates:
       - openstack-cover-jobs
       - build-openstack-docs-pti
-      - openstack-python3-ussuri-jobs
+      - openstack-python3-zed-jobs
       - build-release-notes-jobs-python3
     post:
       jobs:

cloudbaseinit/tests/test_version.py

@@ -78,8 +78,9 @@ class TestVersion(unittest.TestCase):
         thread = mock_thread.return_value
         thread.start.assert_called_once_with()
 
+    @mock.patch('cloudbaseinit.version.get_version')
     @mock.patch('cloudbaseinit.version._read_url')
-    def test__check_latest_version(self, mock_read_url):
+    def test__check_latest_version(self, mock_read_url, mock_ver):
         mock_read_url.return_value = {'new_version': 42}
         mock_callback = mock.Mock()
 
@@ -87,8 +88,9 @@ class TestVersion(unittest.TestCase):
 
         mock_callback.assert_called_once_with(42)
 
+    @mock.patch('cloudbaseinit.version.get_version')
     @mock.patch('cloudbaseinit.version._read_url')
-    def test__check_latest_version_fails(self, mock_read_url):
+    def test__check_latest_version_fails(self, mock_read_url, mock_ver):
         mock_read_url.side_effect = Exception('no worky')
         mock_callback = mock.Mock()
 
@@ -99,8 +101,9 @@ class TestVersion(unittest.TestCase):
         self.assertEqual(expected_logging, snatcher.output)
         self.assertFalse(mock_callback.called)
 
+    @mock.patch('cloudbaseinit.version.get_version')
     @mock.patch('cloudbaseinit.version._read_url')
-    def test__check_latest_version_no_content(self, mock_read_url):
+    def test__check_latest_version_no_content(self, mock_read_url, mock_ver):
         mock_read_url.return_value = None
         mock_callback = mock.Mock()
 
@@ -108,8 +111,10 @@ class TestVersion(unittest.TestCase):
 
         self.assertFalse(mock_callback.called)
 
+    @mock.patch('cloudbaseinit.version.get_version')
     @mock.patch('cloudbaseinit.version._read_url')
-    def test__check_latest_version_no_new_version(self, mock_read_url):
+    def test__check_latest_version_no_new_version(
+            self, mock_read_url, mock_ver):
         mock_read_url.return_value = {'new_versio': 42}
         mock_callback = mock.Mock()
 

cloudbaseinit/tests/utils/test_crypt.py

@@ -23,9 +23,10 @@ class TestOpenSSLException(unittest.TestCase):
         self._openssl = crypt.OpenSSLException()
 
     def test_get_openssl_error_msg(self):
-        expected_error_msg = u'error:00000000:lib(0):func(0):reason(0)'
-        error_msg = self._openssl._get_openssl_error_msg()
-        self.assertEqual(expected_error_msg, error_msg)
+        expected_err_msg = u'error:00000000:lib(0):func(0):reason(0)'
+        expected_err_msg_py10 = u'error:00000000:lib(0)::reason(0)'
+        err_msg = self._openssl._get_openssl_error_msg()
+        self.assertIn(err_msg, [expected_err_msg, expected_err_msg_py10])
 
 
 class TestCryptManager(unittest.TestCase):

doc/source/conf.py

@@ -73,7 +73,7 @@ release = version
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:

setup.cfg

@@ -15,9 +15,9 @@ classifier =
   Operating System :: OS Independent
   Programming Language :: Python
   Programming Language :: Python :: 3
-  Programming Language :: Python :: 3.6
-  Programming Language :: Python :: 3.7
   Programming Language :: Python :: 3.8
+  Programming Language :: Python :: 3.9
+  Programming Language :: Python :: 3.10
 
 [files]
 packages =