Merge "Add flag for collecting tethering active sessions metrics" into main am: 4de2b911a9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3249971

Change-Id: I752b756bf7a0093157a9703c8657ecbbea3a381e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>