Adds build job for the new Operations Guide.

Adds gate job for the new Operations Guide.

Change-Id: I6ef1aaf0fdfbf3b43a054dd85d90dbed0d756d26
Reviewed-on: https://review.openstack.org/24599
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Khai Do <zaro0508@gmail.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins