Revert "Revert "Add TEST_MAPPING to system/netd""

This reverts commit ee40ae8c303f62669d3a86d4c453b9a02cecf08e.

Reason for revert: cuttlefish was fixed (b/124291576)

Bug: 124291576
Change-Id: I9f1a3e1a8c322b60d1f4c4daebfa951f8dabd4a3
(cherry picked from commit 86a883e9578232bb93e2fe8abc262777dfc470b5)
3 files changed