Comment 2 for bug 2025736

Actions in charm-microceph returns error message outside of results dict

$ juju run microceph/0 add-osd device-id=/dev/sdb --format json
Running operation 27 with 1 task
  - task 28 on unit-microceph-0

Waiting for task 28...
{"microceph/0":{"id":"28","message":"Error: failed to record disk: This \"disks\" entry already exists\n","results":{"return-code":0},"status":"failed","timing":{"completed":"2024-05-23 04:01:21 +0000 UTC","enqueued":"2024-05-23 04:01:20 +0000 UTC","started":"2024-05-23 04:01:20 +0000 UTC"},"unit":"microceph/0"}}

It will be useful if the message is part of results dict since libjuju get_action_output returns just the results section.