Update: Commenting out this line in /etc/openldap/ldap.conf seems to fix.
#TLS_CACERTDIR /etc/openldap/certs
I see now I missed the ldap.conf.rpmnew file after upgrade which by default has TLS_CACERT commented out. I still am having trouble understanding why this worked before but not after upgrade (assuming related to moznss but not certain). Can someone help explain the use of TLS_CACERTDIR or TLS_CACERT in the ldap.conf file vs being applied via ldif (as I have done and is noted above)? Does setting the parameter in ldap.conf mean the shared system certs are used? The documentation is confusing me. Thanks.