Flaky traceflow e2e test intraNodeICMPSrcIPDroppedTraceflowIPv4

[luolanzone]

TestTraceflow in e2e tests framework failed often. Here is a report from @antoninbas 's data collection. https://github.com/antoninbas/antrea-flaky-tests/blob/main/results/2023_10_23/results-90.txt

In the past 90 days, the sub test intraNodeICMPSrcIPDroppedTraceflowIPv4 failed 5 times, we may need investigate it's a code issue or test issue, therefore, we can reduce the rerun efforts and improve test efficiency.

[hangyan]

cross posting here. #5760

The most frequently happend case is intraNodeICMPDstIPTraceflowIPv4 now. (example: https://github.com/antrea-io/antrea/actions/runs/7636346955/job/20803790694?pr=5909). It's caused by timeout failure and didn't have a direct cause. Logs didn't show any clues yet, i'm planning to add more debug output to help narrow down the scope.