Updated to omit need for preface on each API page

Change-Id: I4e8ef5bca48aee02caf3dca495de064aac9e2bdc
author: diane fleming
Orchestration: Add preview stack docs

Co-Authored-By: Anderson Mesquita <andersonvom@gmail.com>
Change-Id: I97381b0d24627812e2c98048f9db8326cc719fae
Closes-Bug: #1282204
Updated from global requirements

Change-Id: Idaaea149856485823643c1b13d0921cd2b6e5d25
Merge "Updated to omit need for preface on each API page"
Merge "Orchestration: Add preview stack docs"