Allow virt APEX to use diced and open_dice_cbor

Microdroid payloads use diced to access their secrets and BCCs. The
open_dice_cbor then gives them safe rust bindings to open-dice to
process them. There's a dependency on ZVec which pulls in
libkeystore2_crypto.

Test: build, TH
Change-Id: I402a9a416d7b0e0eed2e268495b148e5669e5c52
3 files changed