[DO NOT MERGE] Update openconfig-qos-interfaces.yang with aged-packets, aged-bytes counters

[rszarecki]

Summary

Enhance qos stats by additional counter for packet droped due to timeout (aged).

Description

Current drop couter is defined as:

/qos/interfaces/interface/output/queues/queue/state/dropped-pkts
description: Number of packets dropped by the queue due to overrun

Condifering overruning of queue is situatin when there is no available buffer space for packet.

However when there is available buffer space but queue service (de-queue) rate is too-little| next to null, packet would stay in queu for seconds or mitutes. What consumes resources and provides no benefits. Hence aging is purging this packets for NOT overrun queues.

###Vendor implementation
Aging is commonly implemented, but counters are inconsistently exposed to UI

Arista: “show platform fap voq delete” (arista do not provide aggregated per egress interface view)

------------- show platform fap voq delete -------------

 Egress Intf     TC     Ingress Chip     Core     Count      First Occurrence       Last Occurrence  
-------------- ------ ---------------- -------- --------- ----------------------- -------------------
 Et3/1            1     Jericho0            0         1     2022-05-19 18:48:04   2022-05-19 18:48:04
                  0     Jericho0            0         6     2022-05-19 18:48:02   2022-11-09 19:45:32
                  1     Jericho0            1         1     2022-05-19 18:48:04   2022-05-19 18:48:04

Cisco:
Juniper:
Nokia:

[OpenConfigBot]

No major YANG version changes in commit 6df4bfa

[OpenConfigBot]

Compatibility Report for commit 6df4bfa:
⛔ pyangbind@23a7a0d

[rszarecki]

Closing this #PR as it is not immedietly needed