Expose TEST_TAP_PREFIX as system API

TestNetworkManager is a part of connectivity mainline module and
it is already a system API, but its constant - TEST_TAP_PREFIX
is hidden, so expose it for the callers inside framework.

Bug: 172183305
Test: make update-api
Change-Id: I7fc08be4a6ca6325d5b576b761afda17865cefaa
1 file changed
tree: 038db43d10b04f7bcaf55400b79d587396534ef7
  1. framework/
  2. service/
  3. OWNERS