MINOR: quic: Adjustments for generic control congestion traces

Display the elapsed time since packets were sent in place of the timestamp which
do not bring easy to read information.

Must be backported to 2.7.
diff --git a/include/haproxy/quic_cc.h b/include/haproxy/quic_cc.h
index bda74f5..6e3c7d5 100644
--- a/include/haproxy/quic_cc.h
+++ b/include/haproxy/quic_cc.h
@@ -53,14 +53,14 @@
 /* Return a human readable string from <ev> control congestion event type. */
 static inline void quic_cc_event_trace(struct buffer *buf, const struct quic_cc_event *ev)
 {
-	chunk_appendf(buf, " event type=");
+	chunk_appendf(buf, " event=");
 	switch (ev->type) {
 	case QUIC_CC_EVT_ACK:
-		chunk_appendf(buf, "ack acked=%llu time_sent:%u",
-		              (unsigned long long)ev->ack.acked, ev->ack.time_sent);
+		chunk_appendf(buf, "ack acked=%llu time_sent:%dms",
+		              (unsigned long long)ev->ack.acked, TICKS_TO_MS(tick_remain(ev->ack.time_sent, now_ms)));
 		break;
 	case QUIC_CC_EVT_LOSS:
-		chunk_appendf(buf, "loss now_ms=%u time_sent=%u", now_ms, ev->loss.time_sent);
+		chunk_appendf(buf, "loss time_sent=%dms", TICKS_TO_MS(tick_remain(ev->loss.time_sent, now_ms)));
 		break;
 	case QUIC_CC_EVT_ECN_CE:
 		chunk_appendf(buf, "ecn_ce");