test(snapshot_latency): do not reuse netns

This is because with netns reuse, the first test variant spends time on
initialising netns, while the subsequent test variants do not.
Disable netns reuse to make the performance data consistent.

Signed-off-by: Nikita Kalyazin <[email protected]>

Author: kalyazin

tests/integration_tests/performance/test_snapshot.py

@@ -122,7 +122,9 @@ def test_restore_latency(
 
     snapshot = vm.snapshot_full()
     vm.kill()
-    for microvm in microvm_factory.build_n_from_snapshot(snapshot, ITERATIONS):
+    for microvm in microvm_factory.build_n_from_snapshot(
+        snapshot, ITERATIONS, no_netns_reuse=True
+    ):
         value = 0
         # Parse all metric data points in search of load_snapshot time.
         microvm.flush_metrics()