This patch makes just the schema changes required for the
implementation of SPICE direct consoles, as requested during
review. See change I1e701cbabc0e2c435685e31465159eec09e3b1a0
for the related feature implementation.
APIImpact
Change-Id: I838ad1a8a74f47544226d3da0e7f1a2f5585b7cb