Merge "[MS07.2] Move NetworkStatsCollection/IdentitySet into frameworks" am: 7577131341 am: a9656625d2 am: bb49fe4bef

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

Change-Id: Id03f0efb4d052fd2da6bfd3d50bbb9a94cd299da