btrfs-progs: ci: add libbtrfsutil python bindings coverage

Run the python tests in CI, coverage is still not complete due to
various problems in the python version support. The claimed minimum
version is still 3.6, while tested minimum is 3.9.

Signed-off-by: David Sterba <dsterba@suse.com>

Author: kdave

.github/workflows/python.yml

@@ -0,0 +1,41 @@
+# Run python tests on various version
+#
+# NOTE: The minimum compatible version is 3.6 but the CI base image does not provide it.
+# NOTE: The recent python versions (3.12 and up) fail to set up due to old python3-setuptools in the image
+# NOTE: The workflow could still pass even if the individual tests fail (FIXME)
+
+name: Python bindings tests
+run-name: Python bindings tests
+on:
+  push:
+    branches:
+      - "ci/**"
+      - devel
+      - release-test
+      - master
+jobs:
+  python-test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        # 3.6 not available since 22.04
+        # 3.12 broken on 24.04 (no setuptools found during build despite being installed, FIXME)
+        # 3.13 not available on 24.04
+        python-version: ["3.9", "3.10", "3.11"]
+    steps:
+      - uses: actions/checkout@v4
+      - run: sudo apt-get update -qqq
+      - run: sudo apt-get install -y pkg-config gcc liblzo2-dev libzstd-dev libblkid-dev uuid-dev zlib1g-dev libext2fs-dev e2fsprogs libudev-dev python3-sphinx libaio-dev liburing-dev python3-setuptools
+      - name: Set up python
+        uses: actions/setup-python@v6
+        with:
+          python-version: ${{ matrix.python-version }}
+      - run: python -c "import sys; print(sys.version)"
+      - name: Configure
+        run: ./autogen.sh && ./configure --disable-documentation --disable-programs --disable-static
+      - name: Make
+        # With --disable-programs most of the tools are not built, but the tests still need mkfs
+        run: make V=1 -j 4 all mkfs.btrfs
+      - name: Test python
+        run: sudo make test-libbtrfsutil