Adds Documentation co-authors as ATCs.

 - Mostly those authors from the Architecture Design Guide book sprint
   who had no other commits in Juno. We use a separate book sprint tool
   just for book sprints, then bring in to the repo in bulk.
 - Egle Sigler gave us the OpenStack Command Line cheat sheet which we added.
 - until https://bugs.launchpad.net/openstack-org/+bug/1373101 is resolved with Sebastian, removing him so they can run electorate roll script

Change-Id: Icf7f262b64b6d21b2edff30cdbc2a15f7238b02d
Merge "Adds Documentation co-authors as ATCs."