Merge "Cleanup existing firewall rule on myUid before the test" into main am: 18520551

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2762791



Change-Id: I02664c27248091212dbfc094b2a8364fbfc2e7b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>