zfs: wipe disk after zpool destroy in zfs sr teardown

zpool destroy removes the pool but leaves ZFS member signatures and the
partition table on disk, causing the device to appear in use on the next
test run.

Signed-off-by: Gaëtan Lehmann <gaetan.lehmann@vates.tech>

Author: glehmann

tests/storage/zfs/conftest.py

@@ -44,6 +44,7 @@ def zpool_vol0(sr_disk_wiped: str, host_with_zfs: Host) -> Generator[None, None,
     yield
     # teardown
     host_with_zfs.ssh(f'zpool destroy {POOL_NAME}')
+    host_with_zfs.ssh(f'wipefs -a /dev/{sr_disk_wiped}')
 
 @pytest.fixture(scope='package')
 def zfs_sr(host: Host, image_format: ImageFormat, zpool_vol0: None) -> Generator[SR, None, None]: