Merge "Call clearCallingIdentity when calling registerNetworkProvider in TNS" am: 0665793932 am: 601e411e21 am: df86fe650e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1635045

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib9169b66fd9f5bccfbbfaa69392ff176e41d4b53