Ticket #47895 - If no effective ciphers are available, disable security setting.
Description: If nsslapd-security is "on" and nsSSL3Ciphers is given
AND none of the ciphers are available or some syntax error is detected,
the server sets nsslapd-security "off" and starts up.
Reviewed by email@example.com (Thank you, Nathan!!)
(cherry picked from commit 0f1a203a0fe85f3cf0440006685f63409502f093)