F20 ServiceAdapter: add GetDut() method

BUG=None
TEST=CQ

Change-Id: I4b8ebdf87b4fe945cdd8c9ac108e96220a21c444
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3371741
Tested-by: Sergey Frolov <sfrolov@google.com>
Auto-Submit: Sergey Frolov <sfrolov@google.com>
Reviewed-by: Jaques Clapauch <jaquesc@google.com>
Commit-Queue: Jaques Clapauch <jaquesc@google.com>
2 files changed