Adding the role needed to run the qdrouterd as an infrastructure
component which provides a messaging backend for the
oslo.messaging AMQP 1.0 driver. The qdrouterd will provide direct
messaging capabilities for the RPC messaging pattern in support
of hybrid messaging deployments.
Implements: blueprint qdrouterd-role
Change-Id: I74c654b3c70f61f81c2c7efa87f076a62a4a2dd8