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

* commit '0c615f4e573ed410559792822eebfdf3c3fac0aa':
  docs: Document test artifact preference setting b/24810371

Change-Id: I59fed31a6853921c070dfd2cf6a23bd0b66af624