When there are two or more CA certificates in the verify chain, the server scans this directory for CA certificates.
ldap_tls_cacert_dir = pathname
You must also provide
ldap_tls_cacert_file in order to create secure connections. ldap_tls_cacert_dir is an optional parameter that can be used
in addition toldap_tls_cacert_file in order to specify a directory with additional individual CA certificates.
