Fix wipe-disks role to work on util-linux >= 2.37

On newer versions of util-linux, the ``wipe_disks`` role was not
properly configured due to the fact that ``lsblk -J`` returns a slightly
different output than what was previously returned. Previously the
output would contain a key called ``mountpoint``, however this has been
changed to ``mountpoints``. This has now been fixed by looking at the
new key as well as the old key.

Closes-bug: #2051859
Change-Id: I2a59f4eb3ae27f37fda38e05924315887cb04c41

ansible/roles/wipe-disks/library/blockdevice_info.py

@@ -28,8 +28,14 @@ import json
 from ansible.module_utils.basic import AnsibleModule
 
 def _has_mounts(device):
-    if device["mountpoint"]:
-        return True
+    try:
+        if device["mountpoint"]:
+            return True
+    # If unmounted, the JSON output contains "mountpoints": [null] so we handle
+    # the KeyError here.
+    except KeyError:
+        if device["mountpoints"][0]:
+            return True
     for child in device.get("children", []):
         if _has_mounts(child):
             return True
@@ -69,4 +75,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()

releasenotes/notes/wipe-disks-0e72c9c8b7bf7e18.yaml

+---
+fixes:
+  - |
+    Fixes the ``wipe-disks`` role which was failing on supported host operating
+    systems due to a change in the output format of ``lsblk -J`` in
+    ``util-linux`` version ``2.37``. LP#2051859
+    <https://bugs.launchpad.net/kayobe/+bug/2051859>__