Updated tutorial content for the public OC release

Content is generated from:
https://googleplex-android-review.git.corp.google.com/#/c/2463591/

The uploaded content has static images for the post-setup and post-ota
tour slides.
This will be suitable for the public OC final.

Bug: 38118252
Test: Manually
Change-Id: I54878812bb057f581298a97dacfd8cc4ecffa7ab