SSSD authenticating with LDAP using an obfuscated password fails at [sdap_cli_auth_step], causing sssd_be to go offline

Issue

• SSSD configured with option ldap_default_authtok_type = obfuscated_password fails to connect to LDAP and causes sssd_be to go offline.

• With SSSD debug mode 0x7ff0 logging enabled, the logs indicate that the connection fails at the [sdap_cli_auth_step] and displays an Invalid authtoken type warning.

  (2021-11-19 15:37:51): [be[testdomain.example.org]] [sdap_cli_auth_step] (0x0100): expire timeout is 900
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [sdap_cli_auth_step] (0x1000): the connection will expire at 1637337171
  --> (2021-11-19 15:37:51): [be[testdomain.example.org]] [sdap_cli_auth_step] (0x1000): Invalid authtoken type
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [sdap_cli_connect_recv] (0x0040): Unable to establish connection [22]: Invalid argument
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [fo_set_port_status] (0x0100): Marking port 389 of server 'ldapserver.testdomain.example.org' as 'not working'
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [fo_set_port_status] (0x0400): Marking port 389 of duplicate server 'ldapserver.testdomain.example.org' as 'not working'
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [sdap_handle_release] (0x2000): Trace: sh[0x55bc6f9f5f80], connected[1], ops[(nil)], ldap[0x55bc6fa0b230], destructor_lock[0], release_memory[0]
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [remove_connection_callback] (0x4000): Successfully removed connection callback.
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [sdap_id_op_connect_done] (0x0400): Marking the backend "testdomain.example.org" offline [22]: Invalid argument
  (2021-11-19 15:37:51): [be[testdomain.example.org]] [be_mark_offline] (0x2000): Going offline!
  

• SSSD configured with option ldap_default_authtok_type = password connects to LDAP successfully.