Add IPv6TetheringCoordinator unit test

Bug: 148636687
Test: atest IPv6TetheringCoordinatorTest
Change-Id: I939323ce09adb9c66b1e2b83d58b0f892aa8f011
1 file changed
tree: d4d3c036058a23588fea231067ca83b67b6cb1de
  1. Tethering/