rook: c-v raw fails to list existing OSD (blocks CI)

It seems that ceph-volume fails to list existing raw osd, logs failure example:

2020-08-05 18:29:44.560689 D | exec: Running command: stdbuf -oL ceph-volume --log-path /tmp/ceph-log raw list /mnt/set1-data-0-b2jvl --format json
2020-08-05 18:29:45.144142 E | cephosd: Traceback (most recent call last):
  File "/usr/sbin/ceph-volume", line 9, in <module>
    load_entry_point('ceph-volume==1.0.0', 'console_scripts', 'ceph-volume')()
  File "/usr/lib/python2.7/site-packages/ceph_volume/main.py", line 39, in __init__
    self.main(self.argv)
  File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 59, in newfunc
    return f(*a, **kw)
  File "/usr/lib/python2.7/site-packages/ceph_volume/main.py", line 150, in main
    terminal.dispatch(self.mapper, subcommand_args)
  File "/usr/lib/python2.7/site-packages/ceph_volume/terminal.py", line 194, in dispatch
    instance.main()
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/raw/main.py", line 32, in main
    terminal.dispatch(self.mapper, self.argv)
  File "/usr/lib/python2.7/site-packages/ceph_volume/terminal.py", line 194, in dispatch
    instance.main()
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/raw/list.py", line 110, in main
    self.list(args)
  File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 16, in is_root
    return func(*a, **kw)
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/raw/list.py", line 66, in list
    report = self.generate(args.device)
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/raw/list.py", line 54, in generate
    whoami = oj[dev]['whoami']
KeyError: 'whoami'

Somewhat the output of ceph-bluestore-tool show-label --dev is incomplete. Every CI runs are affected by this bug.