Add update_engine unittests to the native tests.
am: 381ef84902

Change-Id: I0017920562881c09bcb50600045d4706250fe85d
tree: 48623027488d47ed4472caf125c165d26605c5a2
  1. build/
  2. libraries/
  3. scripts/
  4. tests/
  5. utils/