veyron/services/identity: Create Test Identity Server and
integration test for identity server.

-Factored out CaveatSelector from identityServer, now almost
 all components of the identity server are modular and uncoupled.

Change-Id: I61059fe9704d70c42b63242c81900c82135f3941
18 files changed
tree: 1cd88cdf9744a815d4077d8671f1d1be43981670
  1. lib/
  2. profiles/
  3. runtimes/
  4. security/
  5. services/
  6. tools/