Description of problem:
When sssd.conf is configured with ldap_sasl_minssf = 999 (high values), user
lookups via sssd should display error message. An "Unknown authentication
method" error message should be logged in sssd domain log file which is not
happening s390x and ppc64 architectures. However, user lookups using ldapsearch
command displays proper error message.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Setup sssd client as given below:

[sssd]
config_file_version = 2
sbus_timeout = 30
services = nss, pam
domains = LDAP-KRB5

[nss]
filter_groups = root
filter_users = root
debug_level=0xFFF0

[pam]

[domain/LDAP-KRB5]
debug_level=0xFFF0
id_provider = ldap
ldap_uri = ldap://URI
ldap_search_base = dc=example,dc=com
auth_provider = krb5
krb5_server = <KRB-SERVER>
krb5_realm = EXAMPLE.COM
ldap_sasl_mech = GSSAPI
ldap_sasl_authid = host/<client>
ldap_sasl_minssf=999

2. Clear the cache and restart SSSD service

3. Verify if ldap user lookup works fine without any error by running the below
command:
   # id ldapuser
   uid=1001(ldapuser) gid=1001 groups=1001

4. Now, run ldapsearch against the same user, as given below:
   # ldapsearch -Y GSSAPI -h <ldap-server> -b "dc=example,dc=com" -O minssf=999
uid=ldapuser
ldap_sasl_interactive_bind_s: Unknown authentication method (-6)
        additional info: SASL(-4): no mechanism available: No worthy mechs
found

Actual results:
Following error message is not logged in the sssd_DOMAIN.log file:
"ldap_sasl_bind failed (-6)[Unknown authentication method]"

At the same time, ldapsearch command displays appropriate error message for the
same user.

Expected results:
Appropriate error message in the sssd_DOMAIN.log file.