New config section introduced:
services:
keystone-db:
service_def: mariadb
keystone:
service_def: keystone
mapping:
database: keystone-db
Defined services can be used in topology definition.
In this example keystone-db service will be created from mariadb
definition and keystone will use it instead of mariadb.
Change-Id: I274826648390b844d240b7ae545c40264f662452