Rename tethering jni and get the jni by its package name am: f967b11087 am: de93cf9aba am: 6d52305aa9

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

Change-Id: Iff63a9588d74a43346d9c18729c0e9f0e1a1b21e