[automerger skipped] Add keymaster attestation generation with EVP keys. Add identity credential tags. am: 1307e319c5 -s ours am: 6cc84b0500 -s ours am: 9612a0f17b -s ours
am skip reason: Change-Id If5f01c47441facb3f019c6267ccb7ac2ab39152f with SHA-1 8367d5351c is in history

Change-Id: Id9210dc41fd94bd49b9aa1bd426d3b6de8143c2d