Merge "Add flag for collecting tethering active sessions metrics" into main am: 4de2b911a9 am: 247ec74c3c

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

Change-Id: I699b5b5797244efdc6f463f947e754164b83a0f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>