[snappi-T2] Fix pfcwd/test_pfcwd_actions.py to consider asic value (sonic-net#19592)

Description of PR
Summary: [snappi-T2] Fix pfcwd/test_pfcwd_actions.py to consider asic value
Fixes # sonic-net#19591

Type of change
 Bug fix
 Testbed and Framework(new/improvement)
 New Test case
 Skipped for non-supported platforms
 Test case improvement
Back port request
 202205
 202305
 202311
 202405
 202411
 202505
 msft-202405
Approach
What is the motivation for this PR?
Helper method run_pfc_test is not passing asic_value of the port for enabling/disabling of pfcwd on the dut. This causes config to be not applied for multi-asic devices, where config command needs to be run on asic namespace. And test is failing with No Tx PFCs from DUT after receiving PFCs.

How did you do it?
Updated helper method to pass asic_value correctly.

How did you verify/test it?
Test is passing with the fix.

co-authorized by: jianquanye@microsoft.com

Signed-off-by: Guy Shemesh <gshemesh@nvidia.com>

Author: vkjammala-arista

tests/snappi_tests/pfcwd/files/pfcwd_actions_helper.py

@@ -100,22 +100,24 @@ def run_pfc_test(api,
 
     pytest_assert(testbed_config is not None, 'Fail to get L2/3 testbed config')
 
+    rx_port_asic_value = rx_port['asic_value'] if egress_duthost.is_multi_asic else None
+    tx_port_asic_value = tx_port['asic_value'] if ingress_duthost.is_multi_asic else None
     if (test_def['enable_pfcwd_drop']):
-        start_pfcwd(egress_duthost)
-        start_pfcwd(ingress_duthost)
+        start_pfcwd(egress_duthost, rx_port_asic_value)
+        start_pfcwd(ingress_duthost, tx_port_asic_value)
     elif (test_def['enable_pfcwd_fwd']):
-        start_pfcwd_fwd(egress_duthost)
-        start_pfcwd_fwd(ingress_duthost)
+        start_pfcwd_fwd(egress_duthost, rx_port_asic_value)
+        start_pfcwd_fwd(ingress_duthost, tx_port_asic_value)
     else:
-        stop_pfcwd(egress_duthost)
-        stop_pfcwd(ingress_duthost)
+        stop_pfcwd(egress_duthost, rx_port_asic_value)
+        stop_pfcwd(ingress_duthost, tx_port_asic_value)
 
     if (test_def['enable_credit_wd']):
-        enable_packet_aging(egress_duthost, rx_port['asic_value'])
-        enable_packet_aging(ingress_duthost, tx_port['asic_value'])
+        enable_packet_aging(egress_duthost, rx_port_asic_value)
+        enable_packet_aging(ingress_duthost, tx_port_asic_value)
     else:
-        disable_packet_aging(egress_duthost, rx_port['asic_value'])
-        disable_packet_aging(ingress_duthost, tx_port['asic_value'])
+        disable_packet_aging(egress_duthost, rx_port_asic_value)
+        disable_packet_aging(ingress_duthost, tx_port_asic_value)
 
     rx_port_id = 0