Merge "docs: Document test artifact preference setting b/24810371" into mnc-docs am: 53ae576  -s ours am: 0c615f4
am: bb93651

* commit 'bb93651e70cc8cf2faf39808a957b2ebdc832168':
  docs: Document test artifact preference setting b/24810371

Change-Id: I3379a4b86ae62b8ecd2fae43da01f1454b7841d6