[automerger skipped] Revert "Skip TestDropPacketToVpnAddress if the feature is disabled" am: 504e3da375 -s ours

am skip reason: Merged-In Ib16a7550dcf93dd9ecf29047b1c4f101ff6d610d with SHA-1 9d5d7d0779 is already in history. Merged-In was found from reverted change.

Reverted change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3271851

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3289781

Change-Id: If652bdb7ac4a9eaddca18d488b2f66a4bd4b67af
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>