fix(a/b): ignore network latency on 5.10 host m8i instances

Network latency is known to be flaky on Granite Rapids (m8i) instances
with a 5.10 host kernel. We do not officially support these instances on
5.10 anyway, so it is okay to ignore erroneous A/B results.

Signed-off-by: James Curtis <jxcurtis@amazon.co.uk>

Author: JamesC1305

tools/ab_test.py

@@ -126,6 +126,15 @@ def format_with_reduced_unit(value, unit):
         "performance_test": "test_vsock_throughput",
         "mode": "g2h",
     },
+    # Network latencies on m8i.metal-{48,96}xl w/ 5.10 host
+    *[
+        {
+            "instance": instance,
+            "performance_test": "test_network_latency",
+            "host_kernel": "linux-5.10",
+        }
+        for instance in ["m8i.metal-48xl", "m8i.metal-96xl"]
+    ],
     # block latencies if guest uses async request submission
     {"fio_engine": "libaio", "metric": "clat_read"},
     {"fio_engine": "libaio", "metric": "clat_write"},