This will ensure that the TLS connection to the LDAP server will complete
before starting FreeRADIUS, as it forces libldap to use a blocking socket during
the process. Infinite timeout is the OpenLDAP default.
Avoids this: 87ffc60006/libraries/libldap/tls2.c (L1134)
Related: #1983063
Signed-off-by: Antonio Torres <antorres@redhat.com>
