am d53cf3ba: am 8ddb2873: Change hosttestlib to use ddm-prebuilt.

Merge commit 'd53cf3ba04f48d234200e8418876db62cb0b6b56'

* commit 'd53cf3ba04f48d234200e8418876db62cb0b6b56':
  Change hosttestlib to use ddm-prebuilt.