fix: fix SLR e2e flaky failure caused by VIP not being cleaned up#6347

oilbeater merged 2 commits intomasterkubeovn/kube-ovn:masterfrom

fix/slr-e2e-vip-cleanupkubeovn/kube-ovn:fix/slr-e2e-vip-cleanupCopy head branch name to clipboard