Add Sushy to RDO Pike
Add Sushy to RDO Pike

The Sushy library is used for communication with systems that supports
the Redfish protocol (http://www.dmtf.org/standards/redfish).

Ironic is aiming to add a driver to manage Redfish nodes as part of
the Pike release [0] and this driver uses the Sushy library.

[0] https://review.openstack.org/#/c/438982/

Change-Id: I2765e32b1b5af07eee1b17f39cee94fe48031bc6

javierpena/rdoinfo,redhat-openstack/rdoinfo