Convert storage test cases to HomeserverTestCase. (#9736)

changelog.d/9736.misc

tests/storage/test_devices.py

tests/storage/test_directory.py

tests/storage/test_end_to_end_keys.py

tests/storage/test_event_push_actions.py

tests/storage/test_profile.py

tests/storage/test_redaction.py

tests/storage/test_registration.py

tests/storage/test_room.py

tests/storage/test_state.py

tests/storage/test_user_directory.py