fix: only test eBGP neighbors (sonic-net#14310)

Description of PR
Summary: only test eBGP neighbors for test_bgp_queues

Approach
What is the motivation for this PR?
Complete sonic-net#11116

How did you do it?
How did you verify/test it?
T2 profile

Signed-off-by: Austin Pham <austinpham@microsoft.com>

Author: auspham

tests/bgp/test_bgp_queue.py

@@ -59,6 +59,11 @@ def test_bgp_queues(duthosts, enum_frontend_dut_hostname, enum_asic_index, tbinf
     for k, v in list(bgp_facts['bgp_neighbors'].items()):
         # Only consider established bgp sessions
         if v['state'] == 'established':
+            # For "peer group" if it's internal it will be "INTERNAL_PEER_V4" or "INTERNAL_PEER_V6"
+            # If it's external it will be "RH_V4", "RH_V6", "AH_V4", "AH_V6", ...
+            if "INTERNAL" in v["peer group"] and duthost.get_facts().get('modular_chassis'):
+                # Skip iBGP neighbors since we only want to verify eBGP
+                continue
             assert (k in arp_dict.keys() or k in ndp_dict.keys())
             if k in arp_dict:
                 ifname = arp_dict[k].split('.', 1)[0]