veyron/services/mgmt/node/impl: implement Revert, and add corresponding test logic.

As part of implementing Revert, this change adds the 'previous' link to each app
version, which points back to the predecessor version.

Change-Id: I25840d84a3bfbf61ef896202227c28305d206a88
3 files changed
tree: 8520f1bf3846539c77be004f679d37d014017e36
  1. examples/
  2. jni/
  3. lib/
  4. profiles/
  5. runtimes/
  6. security/
  7. services/
  8. tools/