Provided a dummy cli_int_version for tests from neither unit nor inte…

…gration

test/conftest.py

@@ -11,6 +11,14 @@ def pytest_configure(config):
     )
 
 
+@pytest.fixture(scope='session')
+def cli_int_version():
+    assert False, (
+        'This should never be called, only provides a placeholder for tests '
+        'not belonging to neither units nor integrations.'
+    )
+
+
 @pytest.fixture(autouse=True)
 def run_on_cli_version_handler(request, cli_int_version):
     """