[minigraph-parser] Disable unsupported counters on management devices (…

…sonic-net#16937)

Why I did it
To avoid orchagent crash issue like sonic-net/sonic-swss#2935, disable unsupported counters on SONiC management devices.

Work item tracking
Microsoft ADO (number only): 25437720
How I did it
Update the minigraph parser to disable unsupported counters on management devices.

How to verify it
Verified by unittest.
Manually apply patch to DUT and do config load_minigraph

src/sonic-config-engine/minigraph.py

@@ -39,6 +39,11 @@
 backend_device_types = ['BackEndToRRouter', 'BackEndLeafRouter']
 console_device_types = ['MgmtTsToR']
 dhcp_server_enabled_device_types = ['BmcMgmtToRRouter']
+mgmt_device_types = ['BmcMgmtToRRouter', 'MgmtToRRouter', 'MgmtTsToR']
+
+# Counters disabled on management devices
+mgmt_disabled_counters = ["BUFFER_POOL_WATERMARK", "PFCWD", "PG_DROP", "PG_WATERMARK", "PORT_BUFFER_DROP", "QUEUE", "QUEUE_WATERMARK"]
+
 VLAN_SUB_INTERFACE_SEPARATOR = '.'
 VLAN_SUB_INTERFACE_VLAN_ID = '10'
 
@@ -1703,6 +1708,10 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
     if current_device['type'] in dhcp_server_enabled_device_types:
         results['DEVICE_METADATA']['localhost']['dhcp_server'] = 'enabled'
 
+    # Disable unsupported counters on management devices
+    if current_device and current_device['type'] in mgmt_device_types:
+        results["FLEX_COUNTER_TABLE"] = {counter: {"FLEX_COUNTER_STATUS": "disable"} for counter in mgmt_disabled_counters}
+
     return results
 
 def get_tunnel_entries(tunnel_intfs, tunnel_intfs_qos_remap_config, lo_intfs, tunnel_qos_remap, mux_tunnel_name, peer_switch_ip):