Merge "[MS07.2] Move NetworkStatsCollection/IdentitySet into frameworks" am: 7577131341 am: a9656625d2

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1895330

Change-Id: I451e7bbf8a3bf1c3cf3631fe6f5ca742b4696c2a