tests: Replace imp with importlib.machinery

It's needed for Python3.12 support, because imp has been dropped [1].

Also shlex dropped s=None support [2].

[1]: https://docs.python.org/3/whatsnew/3.12.html
[2]: https://github.com/python/cpython/issues/94352

Change-Id: I23f37897ea08ac708f6df485f699122df647e552

ansible/module_utils/kolla_podman_worker.py

@@ -78,6 +78,7 @@ class PodmanWorker(ContainerWorker):
         )
 
         command = self.params.pop('command', '')
+        if command:
             self.params['command'] = shlex.split(command)
 
         #  we have to transform volumes into mounts because podman-py

tests/kolla_container_tests/test_docker_worker.py

@@ -15,7 +15,7 @@
 
 
 import copy
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 import sys
 from unittest import mock
@@ -32,8 +32,8 @@ kolla_container_file = os.path.join(ansible_dir,
                                     'library', 'kolla_container.py')
 docker_worker_file = os.path.join(ansible_dir,
                                   'module_utils', 'kolla_docker_worker.py')
-kc = imp.load_source('kolla_container', kolla_container_file)
-dwm = imp.load_source('kolla_docker_worker', docker_worker_file)
+kc = SourceFileLoader('kolla_container', kolla_container_file).load_module()
+dwm = SourceFileLoader('kolla_docker_worker', docker_worker_file).load_module()
 
 
 FAKE_DATA = {

tests/kolla_container_tests/test_podman_worker.py

@@ -14,7 +14,7 @@
 
 
 import copy
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 import sys
 import unittest
@@ -31,8 +31,8 @@ kolla_container_file = os.path.join(ansible_dir,
                                     'library', 'kolla_container.py')
 podman_worker_file = os.path.join(ansible_dir,
                                   'module_utils', 'kolla_podman_worker.py')
-kc = imp.load_source('kolla_container', kolla_container_file)
-pwm = imp.load_source('kolla_podman_worker', podman_worker_file)
+kc = SourceFileLoader('kolla_container', kolla_container_file).load_module()
+pwm = SourceFileLoader('kolla_podman_worker', podman_worker_file).load_module()
 
 FAKE_DATA = {
     'params': {

tests/kolla_container_tests/test_systemd.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 import sys
 from unittest import mock
@@ -26,7 +26,8 @@ this_dir = os.path.dirname(sys.modules[__name__].__file__)
 ansible_dir = os.path.join(this_dir, '..', '..', 'ansible')
 systemd_worker_file = os.path.join(ansible_dir,
                                    'module_utils', 'kolla_systemd_worker.py')
-swm = imp.load_source('kolla_systemd_worker', systemd_worker_file)
+swm = SourceFileLoader('kolla_systemd_worker',
+                       systemd_worker_file).load_module()
 
 
 class TestSystemd(base.BaseTestCase):

tests/test_fernet_rotate_cron_generator.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 import sys
 
@@ -22,7 +22,7 @@ this_dir = os.path.dirname(sys.modules[__name__].__file__)
 file_under_test = os.path.join(this_dir, '..', 'ansible',
                                'roles', 'keystone', 'files',
                                'fernet_rotate_cron_generator.py')
-generator = imp.load_source('generator', file_under_test)
+generator = SourceFileLoader('generator', file_under_test).load_module()
 
 
 class FernetRotateCronGeneratorTest(base.BaseTestCase):

tests/test_kolla_container.py

@@ -15,7 +15,7 @@
 
 # FIXME(yoctozepto): tests do not imitate how ansible would handle module args
 
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 import sys
 from unittest import mock
@@ -28,8 +28,8 @@ kolla_container_file = os.path.join(ansible_dir,
                                     'library', 'kolla_container.py')
 docker_worker_file = os.path.join(ansible_dir,
                                   'module_utils', 'kolla_docker_worker.py')
-kc = imp.load_source('kolla_container', kolla_container_file)
-dwm = imp.load_source('kolla_docker_worker', docker_worker_file)
+kc = SourceFileLoader('kolla_container', kolla_container_file).load_module()
+dwm = SourceFileLoader('kolla_docker_worker', docker_worker_file).load_module()
 
 
 class ModuleArgsTest(base.BaseTestCase):

tests/test_merge_config.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 
 from io import StringIO
@@ -25,7 +25,8 @@ MERGE_CONFIG_FILE = os.path.join(PROJECT_DIR,
                                  'ansible/action_plugins/merge_configs.py')
 
 
-merge_configs = imp.load_source('merge_configs', MERGE_CONFIG_FILE)
+merge_configs = SourceFileLoader('merge_configs',
+                                 MERGE_CONFIG_FILE).load_module()
 
 TESTA = '''[DEFAULT]
 key1 = b

tests/test_merge_yaml.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import imp
+from importlib.machinery import SourceFileLoader
 import os
 
 from ansible.errors import AnsibleModuleError
@@ -22,7 +22,7 @@ from oslotest import base
 PROJECT_DIR = os.path.abspath(os.path.join(os. path.dirname(__file__), '../'))
 MERGE_YAML_FILE = os.path.join(PROJECT_DIR,
                                'ansible/action_plugins/merge_yaml.py')
-merge_yaml = imp.load_source('merge_yaml', MERGE_YAML_FILE)
+merge_yaml = SourceFileLoader('merge_yaml', MERGE_YAML_FILE).load_module()
 
 
 class MergeYamlConfigTest(base.BaseTestCase):