Keystone (V2): Validate Auth Token

[BenjamenMeyer]

GET on /v2.0/tokens/​{tokenId}​

• validate token, see OpenStack Keystone V2 Documentation (http://developer.openstack.org/api-ref-identity-v2.html)

[BenjamenMeyer]

/v2.0/tokens completed for Password, API Key, and Token authentication; validation at /v2.0/tokens/{token} still has to be done; internal support is there.

[BenjamenMeyer]

Model: openstackinabox.models.keystone.model.db.tokens