Migrate away from deprecated distutils

Before:

```
=============================== warnings summary ===============================
test/test_ctests.py:12
  /tmp/libfuse-build-mB50ZC/build-gcc-9/test/test_ctests.py:12: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
    from distutils.version import LooseVersion

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
```

3 files changed, 3 insertions, 3 deletions

diff --git a/test/ci-install.sh b/test/ci-install.sh
index a4f273b..2d7b517 100755
--- a/test/ci-install.sh
+++ b/test/ci-install.sh
@@ -3,7 +3,7 @@
 set -e
 
 sudo python3 -m pip install --upgrade pip
-sudo python3 -m pip install pytest meson==1.0.1
+sudo python3 -m pip install pytest meson==1.0.1 looseversion
 valgrind --version
 ninja --version
 meson --version
diff --git a/test/test_ctests.py b/test/test_ctests.py
index 63728c3..951a34b 100644
--- a/test/test_ctests.py
+++ b/test/test_ctests.py
@@ -9,7 +9,7 @@ import subprocess
 import pytest
 import platform
 import sys
-from distutils.version import LooseVersion
+from looseversion import LooseVersion
 from util import (wait_for_mount, umount, cleanup, base_cmdline,
                   safe_sleep, basename, fuse_test_marker, fuse_caps,
                   fuse_proto)
diff --git a/test/test_examples.py b/test/test_examples.py
index 7df9ba4..a7ba998 100755
--- a/test/test_examples.py
+++ b/test/test_examples.py
@@ -18,7 +18,7 @@ import time
 import errno
 import sys
 import platform
-from distutils.version import LooseVersion
+from looseversion import LooseVersion
 from tempfile import NamedTemporaryFile
 from contextlib import contextmanager
 from util import (wait_for_mount, umount, cleanup, base_cmdline,