Merge "Keystore 2.0: Add key migration API." am: d42f1be8eb am: a48b43ec42 am: 87a312952c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1676925

Change-Id: Id028c5a629cd6a5c58604af4bff12c5779e38911