Add updated Test Support lib docs to reference. am: debd2a7d41 am: 59df5b8029 am: af5c50e1fa
am: dff9dcd4bf

* commit 'dff9dcd4bf7879cf53026ce4402f591c3ecc9d1c':
  Add updated Test Support lib docs to reference.

Change-Id: I5139c32aa25f65ae3dd93dc9fb28c7ca2c876ac6