Add brillo_PingTest.

This implements the Brillo PTS connectivity test.

BUG=b:25341629
TEST=brillo_test_launcher.py --quickmerge -t brillo_PingTest

Change-Id: Ica99ba13f70eefa20f95cb6a387d3eb2d24e7c9b
Reviewed-on: https://chromium-review.googlesource.com/309561
Commit-Ready: Gilad Arnold <[email protected]>
Tested-by: Gilad Arnold <[email protected]>
Reviewed-by: Dan Shi <[email protected]>
3 files changed