tree 0df3e05b19b13885208f6460dbcd56ad78a7bdc8
parent ffa1bb03707cb03a07ebba4970c1d8a5a70e9542
author Daniel Rosenberg <drosen@google.com> 1544778490 -0800
committer Daniel Rosenberg <drosen@google.com> 1544828128 -0800

Add Support for metadata key with rollback

This adds the ability to upgrade a key and retain the
old one for rollback purposes. We delete the old key
if we boot successfully and delete the new key if we
do not.

Test: Enable checkpointing and test rolling back
      between two versions
Bug: 111020314

Change-Id: I19f31a1ac06a811c0644fc956e61b5ca84e7241a