Stray daemon tcmu-runner is reported not managed by cephadm

Issue

• Stray daemon tcmu-runner is reported not managed by cephadm after configuring iscsi target to create one iscsi disk:

# ceph -s
  cluster:
    id:     643c1dc8-21b0-11ec-9e5b-001a4a160455
    health: HEALTH_WARN
            2 stray daemon(s) not managed by cephadm

  services:
    mon:         2 daemons, quorum rhcs5admin,rhcs5client01 (age 11d)
    mgr:         rhcs5admin.uecbxt(active, since 2w), standbys: rhcs5client01.ioacsx
    osd:         3 osds: 3 up (since 4w), 3 in (since 4w)
    rgw:         2 daemons active (2 hosts, 1 zones)
    tcmu-runner: 2 portals active (2 hosts)

  data:
    pools:   9 pools, 209 pgs
    objects: 328 objects, 13 KiB
    usage:   2.7 GiB used, 27 GiB / 30 GiB avail
    pgs:     209 active+clean

# ceph health detail
HEALTH_WARN 2 stray daemon(s) not managed by cephadm
[WRN] CEPHADM_STRAY_DAEMON: 2 stray daemon(s) not managed by cephadm
    stray daemon tcmu-runner.rhcs5admin:rbd/disk_1 on host rhcs5admin not managed by cephadm
    stray daemon tcmu-runner.rhcs5client01:rbd/disk_1 on host rhcs5client01 not managed by cephadm