Merge "API review: Addional documentation for QosFilter" am: 3b45bca306 am: b9c6d49a6f am: 771afe8bb9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2008676

Change-Id: I3813f126a64f34a4b1b3ff3265cc9dad12b19f55