Merge "Switch SystemUI from IConnectivityManager to VpnManager." am: 0b303f2d15 am: c30b637f54 am: ac36f9b641

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1574867

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1e9a80b661c8614ae20fbba7cbf35d809b4b465e