veyron/services/identity, veyron/tools/identity: Identity tool can request blessing with
caveats.

* New oauth flow to keep the blessing process secure from malicious identity tools.
* The oauth flow can be seen https://docs.google.com/a/google.com/document/d/1SRoc2cKE9iE1fWR7aSmMoccZoi4ZE8BQL7sr1LDNVkk/edit?usp=sharing.

Change-Id: I534f216953a1825cce899ffbfd82768db49b4108
19 files changed
tree: 115a789279cfd4febeacbda2bb3802cb1a6eda73
  1. lib/
  2. profiles/
  3. runtimes/
  4. security/
  5. services/
  6. tools/