TSG-4030 Security Event Logs 中的 SSL.Intercept State 为 Passthrough 时，并未说明引起 Passthrough 的原因

(当命中 tcp passthrough 时，将 ssl_intercept_status 设置为 passthrough)

platform/src/ssl_stream.cpp

@@ -1476,6 +1476,7 @@ static void peek_chello_on_succ(future_result_t * result, void * user)
 	if (ATOMIC_READ(&certstore_is_unavailable) > 3)
 	{
 		s_stream->up_parts.action=SSL_ACTION_PASSTHROUGH;
+		ssl_stream_set_cmsg_string(s_stream, TFE_CMSG_SSL_PASSTHROUGH_REASON, "Certstore Unavailable");
 		TFE_LOG_ERROR(ctx->mgr->logger, "CertStore is unavailable, PASSTHROUGH");
 	}