Merge fix from validate.py to test.py

Let's keep these in sync.

Change-Id: I4f8cf4a8656f1a73df4243f68ce5866886de6c9f
Spellchecked book

bug: #1220266

Change-Id: I5e05fc56ce7c8aa602221a20fb73eecaf1a9f5dc
author: diane fleming
Adds Networking install chapter.
bug: 1223542

Change-Id: I6ae55c4ac26b95e7a93d05b933f47890f5243f67
Merge "Spellchecked book"
Merge "Adds Networking install chapter. bug: 1223542"
Merge "Merge fix from validate.py to test.py"