4009: Add CDI Devices to device plugin API

This change proposes adding a field to the existing device plugin API
to allow device plugin vendors to specify CDI device IDs as part of
the allocate response for a container.

Signed-off-by: Evan Lezar <[email protected]>

Author: elezar

keps/prod-readiness/sig-node/4009.yaml

@@ -0,0 +1,3 @@
+kep-number: 4009
+alpha:
+  approver: "@johnbelamaric"