[automerger skipped] Increase test coverage for VPN info sent to...

[automerger skipped] Increase test coverage for VPN info sent to NetworkStatsService. am: d1029958 am: f4c6750c -s ours am: c9a31c03 -s ours am: e4762927 -s ours

am skip reason: Merged-In I3711b362f31cb92b759e9f5c9d244fb88d9bd5e7 with SHA-1 d1029958 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13425311

Change-Id: Icca54a337ca708f561a5e4535dd43d4d63d966b0