Merge "Fix TetheringManager memory leak" am: d7d41a73e7 am: 059afb99bb am: 6cecfae8ab am: c4660662c5 am: bc59792e45

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1744513

Change-Id: I05dd20a38e05a2d6f0f7e94e833bdcd52d711a18