Add VCN tests to Tethering MTS and coverage tests
Bug: 376896491
Test: lunch mainline_modules_arm64-mainline-userdebug &&
m mts && mts-tradefed run mts-tethering
Verified on V and B
Flag: EXEMPT; test code change
Change-Id: I0c84e1dab47d2d550cdcfdaffa0677fe1749437b
MTS consists of a set of testing frameworks and test cases, designed to help enhance the robustness, reliability, and compliance of a mainline train (i.e. a set of mainline modules).
MTS has mainly three types of tests:
//TODO: add user manual