Make the CTS VPN hostside tests pass on R. am: 51d8d9c785

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3255362

Change-Id: I472f6c4c8d0d9cf273355ad7060d521cdd0fd92b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>