[test_snmp_queue] Adjusted the test according to the new buffer queue/pg counters optimization (#6744)

What is the motivation for this PR?
Because of the new implementation sonic-swss/pull/2432 from now on, there is a valid case if there are no queue counters inside the COUNTERS_DB.

In order for queue counters to be presented in COUNTERS_DB the appropriate queues should be configured inside the CONFIG_DB (e.g "QUEUE|Ethernet14|7-8")

Signed-off-by: Vadym Hlushko <vadymh@nvidia.com>

Author: vadymhlushko-mlnx

tests/snmp/test_snmp_queue.py

@@ -1,18 +1,39 @@
 import pytest
 from tests.common.helpers.snmp_helpers import get_snmp_facts
+from tests.common.helpers.sonic_db import redis_get_keys
 
 pytestmark = [
     pytest.mark.topology('any'),
     pytest.mark.device_type('vs')
 ]
 
-def test_snmp_queues(duthosts, enum_rand_one_per_hwsku_hostname, localhost, creds_all_duts, collect_techsupport_all_duts):
+
+def test_snmp_queues(duthosts, enum_rand_one_per_hwsku_hostname, localhost, creds_all_duts,
+                     collect_techsupport_all_duts):
     duthost = duthosts[enum_rand_one_per_hwsku_hostname]
     hostip = duthost.host.options['inventory_manager'].get_host(duthost.hostname).vars['ansible_host']
 
-    snmp_facts = get_snmp_facts(localhost, host=hostip, version="v2c", community=creds_all_duts[duthost.hostname]["snmp_rocommunity"], wait=True)['ansible_facts']
+    q_keys = redis_get_keys(duthost, "CONFIG_DB", "QUEUE|*")
+
+    if q_keys is None:
+        pytest.skip("No queues configured on interfaces")
+
+    q_interfaces = set()
+    # get interfaces which has configured queues
+    for key in q_keys:
+        intf = key.split('|')
+        # 'QUEUE|Ethernet*|2'
+        if len(intf) == 3:
+            q_interfaces.add(intf[1])
+
+    snmp_facts = get_snmp_facts(localhost, host=hostip, version="v2c",
+                                community=creds_all_duts[duthost.hostname]["snmp_rocommunity"],
+                                wait=True)['ansible_facts']
 
     for k, v in snmp_facts['snmp_interfaces'].items():
         if "Ethernet" in v['description']:
-            if not v.has_key('queues'):
-                pytest.fail("port %s does not have queue counters" % v['name'])
+            intf = v['description'].split(':')
+            # 'ARISTA*:Ethernet*'
+            if len(intf) == 2:
+                if intf[1] in q_interfaces and 'queues' not in v:
+                    pytest.fail("port %s does not have queue counters" % v['name'])