MINOR: ssl: Add ocsp-update information to "show ssl crt-list"

The "show ssl crt-list <list>" CLI command did not manage the new
ocsp-update option yet.
diff --git a/src/ssl_crtlist.c b/src/ssl_crtlist.c
index aa7fdb2..e5a5c24 100644
--- a/src/ssl_crtlist.c
+++ b/src/ssl_crtlist.c
@@ -909,6 +909,13 @@
 		space++;
 	}
 
+	if (conf->ocsp_update != SSL_SOCK_OCSP_UPDATE_DFLT) {
+		if (space) chunk_appendf(buf, " ");
+		chunk_appendf(buf, "ocsp-update %s",
+		              conf->ocsp_update == SSL_SOCK_OCSP_UPDATE_OFF ? "off" : "on");
+		space++;
+	}
+
 	chunk_appendf(buf, "]");
 
 	return;