Rename tethering jni and get the jni by its package name am: f967b11087 am: de93cf9aba am: 5eb70f92e8

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1885530

Change-Id: I97831399da9e4e70ad1821db6984406525002251