Implements the DRAC ManagementInterface for get/set boot device

What it says. The get_sensors_data() won't be implemented as part of
this patch because it's outside the scope of the blueprint.

Co-Authored-By: Imre Farkas <ifarkas@redhat.com>
Implements blueprint drac-management-driver
Change-Id: I9cae3156b6af016bfbf64cb3c117fdec8536f714
Merge "Implements the DRAC ManagementInterface for get/set boot device"
IloVirtualMediaIscsi deploy driver

This commit introduces a new deploy driver which uses iLO virtual
media to boot up proliant baremetal nodes, and uses iSCSI to deploy
the baremetal nodes.

Change-Id: I98f47ed6082a3a28fce3148f6d5177cdb5c61881
Implements: blueprint ironic-ilo-virtualmedia-driver