[automerger skipped] Add quant8 variant of VTS CompilationCachingTest. am: 0e0721f5
am: 8c10d3e5 -s ours
am skip reason: change_id Iaf28065e46c2d90ab8b347b9848be1e6546cce86 with SHA1 35e7599e is in history
Change-Id: If9a0ea8d453607fbd127282003ef7b603c6150e3