The below links include documentation related only to ELIOT uCPE (SD-WAN) Gateway Blueprint. 

ELIOT Release 2 - SD-WAN / WAN Edge / uCPE Architecture Document

ELIOT Release 2 - SD-WAN / WAN Edge / uCPE Installation Guide

ELIOT Release 2 - SD-WAN/ WAN Edge / uCPE Release Notes

ELIOT Release 2 - SD-WAN / WAN Edge / uCPE Test Document