Allow specify RabbitMQ connection for Contail

This patch allows the operator to specify
address and credentials for Contrail's MQ
connection. It uses the same data format,
that is being used to specify MQ connection
parameters for OpenStack components, eg:

  opencontrail:
    control:
      message_queue:
        user: nova
        virtual_host: "/"
        password: rabbit

Change-Id: Ic5dd8fc1f6fa89e9420382933cf3cea0eb2ed67d
Signed-off-by: Illia Polliul <ipolliul@mirantis.com>
8 files changed