Skip adding ingress discard rule to legacy VPN am: 5441470a6a am: 9406c4a313

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/28724995

Change-Id: I5482be2957f1d33bce9bce284c6ceba278e46e78
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>