MINOR: server: Make 'default-server' support 'ca-file', 'crl-file' and 'crt' settings.

This patch makes 'default-server' directives support 'ca-file', 'crl-file' and
'crt' settings.
diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index 34860fe..72b3259 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -7485,11 +7485,11 @@
  * not enabled.
  */
 static struct srv_kw_list srv_kws = { "SSL", { }, {
-	{ "ca-file",                 srv_parse_ca_file,           1, 0 }, /* set CAfile to process verify server cert */
+	{ "ca-file",                 srv_parse_ca_file,           1, 1 }, /* set CAfile to process verify server cert */
 	{ "check-ssl",               srv_parse_check_ssl,         0, 1 }, /* enable SSL for health checks */
 	{ "ciphers",                 srv_parse_ciphers,           1, 0 }, /* select the cipher suite */
-	{ "crl-file",                srv_parse_crl_file,          1, 0 }, /* set certificate revocation list file use on server cert verify */
-	{ "crt",                     srv_parse_crt,               1, 0 }, /* set client certificate */
+	{ "crl-file",                srv_parse_crl_file,          1, 1 }, /* set certificate revocation list file use on server cert verify */
+	{ "crt",                     srv_parse_crt,               1, 1 }, /* set client certificate */
 	{ "force-sslv3",             srv_parse_force_sslv3,       0, 1 }, /* force SSLv3 */
 	{ "force-tlsv10",            srv_parse_force_tlsv10,      0, 1 }, /* force TLSv10 */
 	{ "force-tlsv11",            srv_parse_force_tlsv11,      0, 1 }, /* force TLSv11 */