I have had these kind of issues. the 11511 link did not do it for me, but by putting the following in the LDAP Auxiliary Parameters: which then sets up the sssd config to use kerberos, which works for me, but i am still in the testing phase.
ldap_version 3
bind_policy soft
pam_ldap_attribute uid
auth_provider = krb5
krb5_server = your.server.tld
krb5_realm = YOUR.SERVER.TLD
cache_credentials = true