[SSSD] [sssd PR#5771][comment] sdap: always create sdap object for a forest root

[alexey-tikhonov]

  URL: https://github.com/SSSD/sssd/pull/5771
Title: #5771: sdap: always create sdap object for a forest root

alexey-tikhonov commented:
"""
This also needs a backport to 1.16
"""

See the full comment at https://github.com/SSSD/sssd/pull/5771#issuecomment-926424813