Initial code submit for Open HST. am: 25850f04a1 am: d73fe15626 am: 2d60bbc8e8 am: af8a6d6f4a am: e2b32a20e3

Original change: https://googleplex-android-review.googlesource.com/c/platform/tools/test/openhst/+/11890425

Change-Id: Ia4f0ae5dce4919e789f4e0cb3fca5c3bff3e0026