718f0bde34
Automatic merge from submit-queue (batch tested with PRs 53047, 54861, 55413, 55395, 55308). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Delete network by default in kube-down unless using default network Since I'm seeing folks leak networks in one of our test project (k8s-scale-testing) if they're using kube-up to create/delete their network. I guess we're not having this problem for config-test.sh where we're mostly creating new network. /cc @ixdy @zmerlynn /release-note-none